Belgium international Leandro Trossard is set to move to Turkish club Beskitas from Arsenal, the Premier League champions confirmed on Tuesday.
"We have reached an agreement with Besiktas for the permanent transfer of Leandro Trossard," Arsenal said in a statement.
The 31-year-old forward been given permission to travel to Istanbul to undergo a medical.
Besiktas confirmed the club "have initiated transfer negotiations, (Trossard) will arrive in Istanbul this evening to undergo medical examinations and complete the transfer process".
Trossard joined Arsenal in January 2023 from Brighton on a deal until 2027 worth £21 million plus add-ons.
He scored 36 goals in 174 appearances at Arsenal, helping Mikel Arteta's side win last season's Premier League title and reaching the Champions League final where they lost to Paris Saint-Germain.
Belgium reached the quarterfinals of the 2026 World Cup, with Trossard scoring twice.
Last crowned Turkish champions in 2021, the "Black Eagles" had strengthened their ranks in early June with the arrival of manager Vincenzo Italiano.