Ghanaian midfielder Yaw Ackah has completed his move from Portuguese club Boavista to Turkish club Kayserispor.
Ackah has agreed a three-year contract with the club after the two parties reach agreement.
The 21-year old is expected to replace his compatriot Bernard Mensah who left the club to join Besiktas on a season loan.
Ackah is expected to sign the official contract with the club in a singing ceremony which will be held later this week.
He made 24 appearances for Boavista in the Liga Nos this season with no goals or assists .