Marmoush joined Eintracht Frankfurt from Wolfsburg on a free transfer in May 2023, then delivered an impressive first season with 17 goals across all competitions.
The Egyptian forward hit new heights in the first half of the 2024-2025 campaign. He scored 15 goals in the German league from 8.9 expected goals, adding 9 assists in 17 league matches.
Set pieces were another string to his bow. Marmoush became the first player in Europe's five major leagues since Lionel Messi in 2019 to score directly from a free kick in 3 consecutive official matches.
Marmoush's first months at Manchester City brought plenty to be encouraged about. He scored the first hat-trick of his career against Newcastle, then netted the winner against Bournemouth in the FA Cup quarter-final. He followed up with a long-range strike against the same opponent in the league, a goal voted the best of the season.
Then came the low point. Marmoush missed a penalty against Crystal Palace in the 2025 FA Cup final, with Erling Haaland handing him the ball, only for Dean Henderson to save his effort as City fell at Wembley Stadium.
Nedum Onuoha, the former Manchester City defender, reckons that moment should not define Marmoush's time at the club.
Onuoha told "BBC": "When I see Marmoush, I don't remember the missed penalty, but rather I see the power he possesses in some of his runs in behind the defenders".
Marmoush has scored 16 goals in 62 matches with Manchester City across all competitions since his move, including 8 goals in 36 matches during the 2025-2026 season.
His involvement in the Premier League has clearly declined, though. He has started only 8 matches and played around 700 minutes, a lower tally than he managed after arriving at the club midway through the previous season.
Just three goals and three assists in the league tell part of the story. His expected goals average reached 3.53, a figure close to his actual tally, which suggests the problem wasn't related solely to finishing chances.
Onuoha puts this down to the strong competition in City's attacking line. The positions Marmoush can play in have become occupied by specialists, he says, with Haaland holding the out-and-out striker role while the team also relies on number 10s and wingers. That makes the move to Tottenham a special opportunity for the Egyptian star.
A natural out-and-out striker, Marmoush has never been tied to that one role. At Frankfurt he played as a central striker, a second striker and on the left. Manchester City have deployed him through the middle, out wide and behind another forward.
That versatility could suit De Zerbi, whose sides thrive on forwards interchanging positions, dropping deep to collect the ball and then attacking the spaces that open up behind the opposition defence.
Onuoha reckons the best version of Marmoush emerges when he finds space in behind the back line.
He said: "Although he is good when he drops towards the ball, I think he is better when he plays on the shoulder of the defender. He needs a team that consistently plays him into the spaces behind the defence and forces the opponent to run towards their own goal."
According to Opta's data for the 2025-2026 Premier League season, Marmoush outperforms Dominic Solanke and Richarlison in most attacking metrics per 90 minutes, with the exception of aerial duels.
The Egyptian recorded 0.77 goals and assists, 3.86 shots, 1.55 chances created, 5.67 progressive carries, 1.29 successful dribbles, 6.82 touches inside the penalty area and 11.46 runs in behind the defence.
Those numbers mark him out as a different animal to Tottenham's current forwards. He carries the ball forward, takes on defenders and manufactures his own shooting chances. That could hand De Zerbi an extra weapon against sides that sit deep.
Onuoha said: "Sometimes it's just about how well a player fits the team. Marmoush's ability to run in behind the defence and link up play could be very important for Tottenham. They won't hesitate to play balls in behind the defence and force the opponent to retreat."
Signing Marmoush needn't spell the end for Solanke. The Egyptian's knack for playing off another striker opens the door to fielding the pair together.
Solanke can bully defenders with his physical strength. Marmoush, meanwhile, drifts wide or drops between the lines before bursting into the spaces left by the opponent's press.
Onuoha reckons their contrasting qualities could make them a complementary pairing. "Solanke is different from Marmoush, as he has a greater physical presence," he said. "I can imagine the goalkeeper playing a low ball to Solanke, with Marmoush coming from behind him to receive it, and that becomes the start of the attack."
"Each of them can complement the other," he added. "Playing with two strikers could bring out more of Marmoush's strengths."