Belgium forward Leandro Trossard has joined Turkish side Besiktas from Arsenal on a three-year contract.
The 31-year-old has been signed for 18m euros (£15.3m) - paid in six equal instalments over three years - and his deal also includes a further one-year option.
On Tuesday, he was given permission to travel to Istanbul to undergo a medical after a transfer fee was agreed.
Trossard was under contract until 2027 with Arsenal, having joined from Brighton for £21m plus add-ons in January 2023.
He scored 36 goals and registered 34 assists in 174 appearances for the Gunners, helping Mikel Arteta's side win last season's Premier League title.
Trossard was a key player, starting in the Champions League final defeat by Paris St-Germain and 21 times in the league.
He also started all six games at this summer's World Cup, scoring twice, as Belgium reached the quarter-finals before losing to Spain.
