He became the most expensive Scottish footballer of all time when he swapped Celtic for Arsenal, but it appears Kieran Tierney hasn't forgotten his roots.
The left-back grew up supporting the Hoops, and won the domestic Treble for three years in a row before moving to the Premier League in a £25million deal.
Tierney is yet to make his debut for the Gunners, as the Scotland international is recovering from a double hernia operation he had at the end of last season.
Though his impact isn't yet being felt on the pitch, it appears the Arsenal new boy is already cracking up his teammates.
Youngster Emile Smith Rowe posted a video from the dressing room in which Tierney is dressed all in black, with goggles covering his face and a hood over his head.
The defender may well be channelling his Green Brigade past, having joined the Celtic fans group to celebrate the league title last season, leading the chants with a megaphone.
Of course, it's also possible that Tierney is hoping to land the part of a villain in a superhero movie while he waits to make his Arsenal debut.
Either way it appears he's a hit with his new teammates, as Smith Rowe can be heard cracking up as he films his Scottish friend.
