Besiktas are paying a cut-price fee to take Michy Batshuayi on-loan from Chelsea for the season.
The Belgium striker completed his move yesterday and took part in his first training session with his new team in the afternoon.
Besktas are taking Batshuayi on-loan for a knockdown €150,000. They will also pay the player €3.165m for the season.
He will be in the squad for Beşiktas' clash against Gaziantep on Saturday and expected to make his debut.