The former Reading of England ace was presented to the club fans and press on Monday after signing a one year deal.
Yak is expected to wear the club's number 24 jersey.
Ahmet Yildiz, the club's spokesman to the media at the ceremony that: "The club carried out its work in accordance with the report of the transfer technical committee.
"This transfer has been a great dedication and sacrifice from the club's president as he plans to reshape the team. So I believe we should thank our president of his whole effort.
He also stated that so far 11 players have been added to the team.