Manchester United ended an inconsistent campaign on a high as Paul Pogba and Henrikh Mkhitaryan struck to fire them into next season's Champions League.
Jose Mourinho was buoyant at the final whistle, embracing his son and raising a finger as his staff and players ran onto the pitch in celebration.
The United manager also raised three fingers when the team lifted the trophy – one for each of the trophies he has won during his first season at Old Trafford.
The result came after triumphs in the Community Shield and EFL Cup at Wembley – with Mourinho becoming the first manager in the club's history to win a trophy in his first season at the helm.
Jose Mourinho celebrates in style after Manchester United's Europa League win Wed, May 24, 2017
Jose Mourinho was very happy after Manchester United won the Europa League!
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Jose Mourinho celebrates in style after Manchester United's Europa League win
Jose Mourinho raised a finger to the crowd as Manchester United won the Europa League
We have some code between us, they knew it
Manchester United boss Jose Mourinho
Mourinho's actions was the source of much discussion, with some believing it was a gesture to the media, and others saying it was to reiterate his belief that he is the best manager in world football.
But the man himself has now put the matter to bed by claiming he was signalling to his family, who were in the crowd at the Friends Arena.
"It's for my family," Mourinho said.
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"We have some code between us, they knew it.
Paul Pogba and Henrikh Mkhitaryan scored to fire Manchester United to the trophy
"What I was saying was probably something they told me before the match. But it's between me and them."
A big summer is now expected with United set to tinker with their squad in the transfer market.
Barcelona and Real Madrid stars Neymar and Gareth Bale are on their radar, while United look primed to seal a deal to sign Atletico Madrid hitman Antoine Griezmann.
However, players are also expected to depart with David De Gea, Luke Shaw, Zlatan Ibrahimovic and Wayne Rooney all facing uncertain futures.