Besiktas have completed the signing of Arsenal youngster Oguzhan Ozyakup.
The 19-year-old, who has made two senior appearances for the Gunners, has joined to the Turkish club for £405,000.
"There are many experienced players at this club and I want to learn from them," the midfielder told Besiktas's official website. "It's a significant advantage for me."
Ozyakup entered Arsenal's youth academy in 2008 from Dutch side AZ Alkmaar.