Turkey boss Mustafa Derin is putting his players through their paces in Gemlik as part of their preparations for the U18 European Championship in Vilnius.
Derin has 17 players at the training camp.
"All the players had tough and busy seasons," Derin said. "Some of our players have slight injuries."
An Achilles tendon injury prevented Yigitcan Vardal from joining the squad.
At the U18 European Championship, Turkey will be in Group C with Bulgaria, Russia and Italy.
Preliminary squad: Yunus Sonsırma, Erbil Eroglu, Kerem Hotic, Berkay Candan, Muhammed Mustafa Baygul, Safak Edge, Mert Turkyılmaz, Ozan Corbacıoglu, Can Korkmaz, Ramazan Tekin, Soykan Yıkılmaz, Onur Calban, Ugur Dokuyan, Mertcan Ozen and M.Dogan Senli.