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The Portuguese giants confirm the arrival of the former Standard Liege goalkeeper, who has joined the Lisbon-based club on a free transfer, signing a five-year contract

Porto have announced the signing of Turkey goalkeeper Sinan Bolat on a five-year deal.

The 24-year-old, who was released by Standard Liege this summer, has spent time with the Portuguese champions on a trial basis in recent weeks.

The former Genk stopper will remain at the Estadio do Dragao for the next five years after signing a deal which will keep him at the club until 2018.

Bolat, who holds both Belgian and Turkish citizenship, has the distinction of being the first goalkeeper to score a Champions League goal during open play after netting in the dying stages of Standard's group-stage clash with AZ in 2009.

The Turkey international spent much of last season on the sidelines with a cruciate ligament injury but managed 19 clean sheets from 52 appearances for the Belgian giants throughout the 2011-12 campaign.