New Arsenal signing Granit Xhaka will take the No.16 shirt in his maiden season at the Emirates Stadium, while Alex Iwobi also changes his shirt number for the coming campaign.
The Switzerland international became the side's first signing of the summer when he confirmed a move from Borussia Monchengladbach.
And the mystery over which digit would adorn his back was ended by the club on Friday, with an announcement via Twitter.
Xhaka will take on the No. 16, vacated by Aaron Ramsey who succeeds Mikel Arteta at 8.
Iwobi, meanwhile, moves to No. 17 in a suggestion he is ready to play a bigger part in the Gunners' plans when the Premier League reconvenes this August. Is the 'Big 45', as Arsenal dubbed him, ready for the step up the list?