Sometimes a moment comes along that is absolutely perfect for a player, a football club and the fans.
In the 82nd minute Savio announced himself as a Tottenham Hotspur star and sent the supporters wild. He had entered the fray just 11 minutes earlier, the excitement palpable as he waited on the touchline for what felt like an eternity while play refused to stop for his grand arrival.
Eventually, the ball rolled out of play and the 22-year-old Brazilian saw the board with his number 17 held aloft. The bulk of the 49,008-strong crowd roared their delight and Dominic Solanke, who had grabbed a goal himself, beamed at the young winger as he swapped places with him, likely knowing what could be about to happen.
It had taken £75million of Tottenham's money to finally prise Savio - Roberto De Zerbi's 'Plan A' - away from Manchester City with another £10million to boot in add-ons.
Former City boss Pep Guardiola knew what he had in the Brazil international, calling him one of the world's best in dribbling, needing only the end product to become a superstar. De Zerbi had set his sights on Savio years back, during his eye-catching spell at Girona, but it would take time before he finally got his man. "I have no patience," the Italian admitted to football.london this week.
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Spurs love a winger - whether it's Ginola or Jones, Son or Bale, Lennon or Waddle, one of De Zerbi's favourite players growing up.
It was entirely fitting that on the night the club remembered one of their double-winning wingers Terry Dyson, after his death at 91, the latest wing wizard would make his bow.
Wingers can be the lightning rod for a crowd's excitement and so Savio revelled in the role.
His first involvement was beating his man and sending Pedro Porro away for a move that ended with Mathys Tel being denied by the keeper. Then the Brazilian attempted a backheel shot in the six-yard box that didn't come off before his moment arrived with eight minutes of normal time remaining.
He cut inside off the right wing, raced past two defenders with ease and buried a low shot inside the left-hand post in front of the big south stand. The stadium erupted and the Savinho era had begun.
It was somewhat ironic that the one thing Guardiola and De Zerbi had both said he needed to add to his game - goals - would be the first thing the young winger would immediately address on the pitch.
His next big moment was perhaps an even larger window into his ability. He took a ball from Mateus Fernandes well in the box and with effortless control left Charlton players on their backsides before hitting an effort while falling that struck Ben Davies and ricocheted into the net.
The Brazilian sprinted off to celebrate and picked up a corner flag to wave it around. It needed Pedro Porro to explain to him in his native tongue that rather than bagging a double, the veteran Welshman had instead netted. Savio jokingly initially refused to believe it before hugging his captain for the night Davies.
The new £85million man is a happy character. Like the ever-smiling Son Heung-min, Savio's grin and skill will light up the club on and off the pitch.
He proposed to his childhood sweetheart Anna at just 18 and they married the following year. With daughter Zaya arriving a couple of years later, Savio has got things figured out away from the turf.
Now it's about becoming the main man on it and he has all the ability to do so. The missing part are those goals and De Zerbi told football.london that he has set Savio a target.
"It was a perfect day for him. I think his biggest step and biggest improvement is to increase the number of goals because with his qualities he is one of the best wingers. But the best wingers score many goals," he said.
"I spoke with him yesterday, two days ago. We put the target on 10-12 goals because we need 10-12 goals from the wingers. Last season, I think we suffered too much, because the number of goals scored were not enough to compete for more than that position [17th].
"We need goals, we need to create chances to score. To become a top team, we need many things but one of these many things is to score, to be stronger when we are attacking in the last 30m.
"We have to score, we have to shoot and make combinations. We have a lot of very good players and they have to make a big target, a big goal for them to score and increase the number of goals. There will be competition in every position of the pitch and I will put on the pitch the players with more goals and who are able to create more chances to score."
Ben Davies praised Savio even if he ultimately had to disappoint the Brazilian.
"A proper impact. It is what we expect when you bring quality players on, they come on and show what they are about. He was dangerous, he looked really sharp and hopefully we see more of that," said the experienced Welshman.
On having to tell the young winger that his second effort actually went in off him, he admitted: "I think he was a bit disappointed to be honest and fair enough, but it hit me last, so it is my goal!"
Can Savio now go on to replicate the feats of two of the Welshman's close friends and wing wizards in Son and Gareth Bale?
"You have put him in some good company there I think mate!" he admitted. "Look, it is one game and we are really excited about what we’ve seen so far. He has shown he is a top, top quality player and I really, really hope he can show more of what he did [against Charlton] throughout his time here."
The man Savio replaced on the pitch, Solanke, was blown away by the winger's ability.
"Incredible. I was just sat on the bench watching him with joy to be honest," said the striker. "Every time he got the ball he looked sharp. He was electric. His goal was great, the second goal I thought was his to be fair, but you could see on the big screen it hit Benny.
"It was unfortunate he didn't get his second but a goal and an assist, you can't complain."
Solanke will benefit from the chaos Savio will cause around him in the season ahead.
"Players like that, with one-vs-one situations, nine times out of 10 they're going to beat their defender so as a striker it's great to be in the box and have the confidence that the winger is going to beat their man," he said. "Hopefully he can gel with the team and give me some assists too!"
Solanke got back into the scoring feeling with his swivelled finish 12 yards out and it came at just the right time with Omar Marmoush arriving on loan from City on loan with an obligation to make his move permanent for £50million plus another £10million in add-ons.
The Egyptian will know Savio's game well from their time in Manchester and De Zerbi is excited at the prospect of getting two players he loves through the door and the pace and skill they will inject into an injury-ravaged attack.
Marmoush can be the main man through the middle or play off the left to give the head coach plenty of options.
The prospect of Savio, Marmoush and the almost-back Mohammed Kudus playing together is a mouth-watering prospect, with all three able to beat a defender at will.
Add to that the trickery of Mathys Tel, the potential of Mikey Moore, who scored with a rocket of a finish, and Luca Williams-Barnett, along with the creativity of James Maddison, when he returns in two weeks from a slight shoulder fracture, and eventually Dejan Kulusevski and the goals should start flowing.
Tottenham still want to bring Cody Gakpo from Liverpool to further bolster their numbers if Andoni Iraola can get in the attacking players they need before the window closes. If not, Spurs could look at other options in the final days of the market.
"He's been very good since he's been back from World Cup," said Iraola of the Dutchman on Thursday. "The right attitude and I hope we can keep him at that level. He can be very influential on us. When the market is open and we bring in expensive players I cannot guarantee anything.
"But I don't know. Our players, I cannot guarantee anything about how many we are going to sign or whatever. Experience tells us that if there's an opportunity the last day you can do something."
There's also Savio's former PSV team-mate Xavi Simons and Wilson Odobert to come into the mix at Tottenham as the season goes on. With Solanke and Richarlison as well, if the Brazilian sticks around this summer, a lacklustre department in the squad suddenly becomes fully stocked. That will be needed with the tests to come.
Charlton played well and their 2-0 deficit at half-time flattered Tottenham. However, it must be said that the Championship side made 11 changes and then lost both Collins Sichenje and Billy Koumetio within 11 minutes to injury, the former stretchered off.
Newcastle will offer sterner opposition and De Zerbi will want Marmoush's work permit sorted in time to take part on Saturday. For the 27-year-old has scored more times against the Geordies than any other side in his career, with seven goals and one assist in five games.
Something else Charlton would have experienced during their visit to the Tottenham Hotspur Stadium, which Premier League sides will realise this season, is that the away dressing room, already more basic than the home one, has been further stripped of luxuries.
football.london understands that, as part of making the shiny stadium less of a grand day out for opponents, this summer Spurs made changes to the away dressing room, removing aspects of it to bring it more in line with the facilities they receive on their travels at other Premier League grounds. It is now mainly just a big empty room with benches and pegs and no tables.
Tottenham's home woes in recent years have been well documented and the club have been looking at every little aspect to even shift things in their favour by a single per cent.
The tide is hopefully turning under De Zerbi with the team yet to lose there under the Italian, with three wins and two draws, including this month's friendly against Hoffenheim.
De Zerbi wants to alter the mentality inside the club and part of that is coming with the personnel changes.
Mateus Fernandes is being widely tipped by those inside Spurs to be a potential world class player in the years ahead and his display showed plenty of the drive he will bring to the engine room, along with some of the overexuberances of still being just 22.
The Portuguese registered his first assist for the club with the free-kick that Kevin Danso bravely nodded home before clashing heads with a Charlton player.
The brief was clear for the midfield and defence, to get the ball quickly to the attacking players. Jan Paul van Hecke played a huge 22 passes into the final third, Davies 14, Rodrigo Bentancur 10 and Fernandes nine to top the stats from both sides.
"Mateus Fernandes is another big talent. We are lucky because he can cover two positions on the pitch, like as a pivot or number 10," said De Zerbi. "He brings quality, he is dynamic and fights on the pitch, because I think last season he was one of the best players in terms of regaining the ball, in the duel. He is important, like Gallagher, because we can't forget Gallagher.
"Rodrigo Bentancur played very well. I think now he is very important for us. Unfortunately, he started the season later than the other players, but when Rodrigo Bentancur is fit, is available, in the right physical condition, he is a different player. His understanding is great, he is a different player."
In his club interview De Zerbi's only criticism of Fernandes was that he felt he gave the ball away a few too many times and it could be that the Portuguese becomes the number 10 until Maddison is fit with Sandro Tonali and Bentancur behind him.
That should allow Spurs to get a strong grip of midfield battles while using Fernandes' drive to get them up the pitch.
Tonali was not involved on Wednesday night and De Zerbi explained why ahead of the meeting his former team this weekend.
"Sandro was in a plan to work with Marco Senesi yesterday, very strong, to improve their physical condition. Sandro has to work to feel better in terms of physical condition, but Saturday he will play in the first XI," he said.
As well as the impact of the big money summer signings on Wednesday evening it was also a good night for the academy.
Moore's powerful finish sparked his confidence and he had the beating of his full-back every time from that point on, and he also technically got the inadvertent assist for Solanke's goal. The 19-year-old had 12 touches in the Charlton box, far more than anyone else and won seven of his 14 ground duels.
Seventeen-year-old Williams-Barnett got off the bench for his second appearance for the club late on in the game.
He came on as a false nine with Solanke off the pitch and Richarlison trudging back downcast to the bench when he realised the youngster was coming on rather than him.
"It’s really important. It is the lifeblood of the club having young boys through the academy, the boys over there and I did my badges with them," said Davies of Moore and Williams-Barnett. "I coached Luca when he was 16, that was my age group and these boys, it is their dream to play for this club.
"Everyone in the academy works so hard to make that happen and this is a credit to the guys in the academy."
De Zerbi essentially admitted to football.london after the game that Moore will likely head out on loan, with Bundesliga club Koln expected to be his destination once it's clear what's happening with Spurs' attack.
"It is important for him [to score], it is important for us because he is our player from the academy and in this day we have to understand what the best solution is for him, for us because I would like to keep him because he is young but a good player," said the Italian.
"But we can’t make the wrong decision because he needs to play and put games inside of him. With Johan Lange and Vinai [Venkatesham] we have to find the best solution."
Davies, who has now been at the club for 12 years, was excellent on the night and as one of De Zerbi's captains will have his role to play this season at either centre-back or left-back.
"I am very comfortable [at centre-back], I have played there a lot of my career now and I have always done a job wherever I have been asked to but I like playing in there," said Davies. "I had a bad injury in January and that is the first time I have had a competitive game on that pitch since, so it was a nice monkey off my back."
On De Zerbi's way of working, he added: "It’s really impressive. It's obviously great to be involved in the day to day and to see him work. It is not just about the patterns we learn or how we want to play, but you really have to learn it and then it becomes second nature to you on the pitch and you see different pictures that perhaps you wouldn’t have seen before.
"He is very clear in his direction of what he expects from you and I'm very, very impressed."
The reward for the cup win is a tough away trip to Liverpool next month but the focus will be on other things right now.
The days ahead will bring preparations to face Matthias Jaissle's new-look Newcastle side, complete with their own Manchester City recruit in Nico Gonzalez, as well as plenty of final decisions in the transfer market.
Will Tottenham bring in a ninth new signing after Marmoush as De Zerbi continues to remodel his attack? The club may have to react to outgoing players or alternatively players may make way for new arrivals.
Pape Matar Sarr has interest from Ligue 1 sides such as Monaco as well as Galatasaray in Turkey, Richarlison will have suitors, including former side Everton, while Moore will likely head off on that loan to Germany.
Other young players such as Callum Olusesi, Jamie Donley, Tyrese Hall, Damola Ajayi and Alfie Dorrington all need moves, while Tye Hall and Rio Kyerematen will also be in demand after their pre-season displays, although the latter did get injured in Sydney. George Abbott is back on the grass after his injury and has interest in his services.
Just five full days remain of the summer transfer window. The club played the late, great Dolly Parton's '9 to 5' over the speakers at the half-time whistle inside the stadium on Wednesday night but Spurs' recruitment department have been putting in the overtime this summer.
Tottenham's work in the window so far has been beyond anything they have achieved in the modern era in terms of money spent and the ready-made quality of the players. There could yet be more and then it's on De Zerbi and his staff to shape it into something special.
