Ghana international, Thomas Partey has been handed jersey number 18 at new club Arsenal.
The dynamic midfielder joined the Gunners on a long term contract from Atletico Madrid on transfer deadline day.
Partey sealed just minutes before the transfer deadline and move from the La Liga side after Arsenal invoked an automatic transfer by paying the full buyout clause of £60m.
Last season, the Ghana international made 46 appearances for Atletico, playing a key role in their third-place finish in La Liga and reaching the quarter-finals of the Champions League.
The 27-year-old midfielder had been with Atletico since 2012, making 188 appearances, in which time he won both the Europa League and Super Cup in 2018, and was a Champions League runner-up in 2016.
During his career, Thomas has also enjoyed successful loan spells in Spain with RCD Mallorca (2013/14) and UD Almeria (2014/15), and has made 29 international appearances for Ghana.