The Ghana international midfielder will be following in the footsteps of Martin Keown and Kolo Toure when filling a new jersey
Thomas Partey is changing squad numbers at Arsenal, with the £45 million ($62m) midfielder trading in No.18 for No.5 at Emirates Stadium.
The Ghana interntional was a big-money addition at Emirates Stadium during the summer transfer window of 2020.
Big things were expected of him, but individual struggles mirrored those endured by the Gunners as a collective and the hope is that a "lucky" shirt will deliver an upturn in fortune during a second season in English football.