The 28-year-old winger has signed a two-year contract with the Turkish champions
The German international opted for financial certainty
UEFA has fined Rangers FC €30,000 and ordered a partial stadium closure at Ibrox after a group of home fans displayed a banner deemed "racist and/or discriminatory" during the Europa League fixture against Fenerbahce on March 13
Galatasaray has emerged as the leading contender to sign Chelsea forward