The teenager was still in the thick of the party after Spurs' 1-0 victory in Bilbao
But he was unable to join his team-mates on their night out because of his age
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Tottenham youngster Mikey Moore was spotted joining in with 'we hate Arsenal' chants at a pub two days on from the club's sensational Europa League triumph.
Spurs won their first trophy in 17 years after beating Manchester United 1-0 in Wednesday's final and returned victorious to the UK to celebrate with supporters.
An open-top bus parade was thrown on Friday and the squad then headed to Mayfair to continue the wild party - although teenager Moore, 17, was forced to miss out.
With the forward too young to hit the tiles with the rest of the first-team, Moore instead headed to a watering hole in Broxbourne to revel in their success.
Making a surprise appearance at The Bull, Moore toasted Spurs' tense victory with other supporters, who whipped out their phones to capture the scenes.
Moore donned a pair of sunglasses and appeared to be wearing his Europa League final shirt, judging from the embroidered fixture details on the front.
The starlet joined in full voice with the 'we hate Arsenal' song and was also serenaded in a heartwarming moment by a 'he's one of our own' chant.
Footage of the revelry was shared across X on Saturday morning and supporters were delighted, hailing him as 'the future' and saying 'the boy's become a man'.
Moore became the youngest Spurs player to feature in the Premier League after being given his debut in a 2-0 defeat by Manchester City last May - and he has enjoyed a memorable breakthrough campaign under Ange Postecoglou.
A product of the club's esteemed academy system, Moore has made 10 top-flight appearances this term and five in the Europa League, scoring one goal.
He has also been capped by England up to Under-19 level.
Boss Postecoglou admitted he had tried to ease Moore into the rigours of first-team football before being forced to rely on him after a spate of injuries.
'We've exposed Mikey a hell of a lot more than I thought we would at the start of the year,' said Postecoglou, via football.london.
'He only just started playing Under-21 football last year and he had some injuries, didn't play a lot. It was kind of touch-and-go at the start of the year, do we let him bed in with the 21s or give him a loan or keep him with us?
'But my thing was to let him train for a year, train with men, train in the first team environment and see how he adapts.
'At the end of that, he'll still be 17 or 18 and we can make decisions.
'But he's played a lot more than we thought. He's very much a part of our set-up in the first-team and he's training every day.'