Alex Iwobi and Danny Welbeck helped Arsenal team-mate Rob Holding celebrate his 23rd birthday in training on Friday.
Holding, who featured in the Gunners' Europa League win over Vorskla Poltava on Thursday, featured in a number of videos posted on social media to celebrate the occasion.
He is labelled a 'mad man' by Welbeck after head-butting a punch bag in a video on the striker's Instagram page, while in the other, fellow youngster Iwobi sings 'Happy Birthday' in front of a sheepish Holding.
Iwobi also wrote: 'Happy Birthday bro' to caption the Instagram post.
A summer signing from Bolton in 2016, Holding played 90 minutes on Thursday evening in Arsenal's 4-2 Europa League win over Ukrainian side Vorskla Poltava at the Emirates.
Pierre-Emerick Aubameyang scored a brace either side of Danny Welbeck's header, with Mesut Ozil getting a fourth on 74 minutes to put the game beyond Vorskla.
The visitors netted two late consolation goals before the end but it was not enough to prevent Unai Emery from claiming his first European win as Arsenal boss.
Arsenal return to domestic action against Everton on Sunday, looking to make it four wins on the bounce in the Premier League.
