The experienced midfielder rejoins the Turkish club for 350,000 euros after an unsuccessful six-month spell at the Europa League holders.
The 32-year-old, who has also represented Inter and Newcastle United, will earn 1.2 million euros a year on a two-and-a-half year contract.
"I am extremely happy. I think all Fenerbahce fans will be be happy," the club's vice president Abdullah Kigili told their website.
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