West Ham United left-back Arthur Masuaku has left the club on a season-long loan to join Turkish side Besiktas.
The Democratic Republic of Congo international has moved to the Turkish Super Lig side in a deal for the duration of the campaign that includes an option to make the move a permanent one next summer.
Since moving to east London from Greek side Olympiakos six years ago, Masuaku has made 129 appearances for the club and scored twice in all competitions.