The Senegal striker has barely had a look in since Jose Mourinho took charge of the Blues, starting just two games in all competitions this season.
Premier League duo Arsenal and West Ham United are also interested in securing the Senegal international’s services, with both sides currently suffering problems upfront.
Nicklas Bendtner is the Gunners only fit back up option to first choice forward Olivier Giroud at this moment, while the Hammers have been playing without a striker for several weeks with their current incumbent either injured or misfiring.
However, a move to the Super Lig is also on the cards with Besiktas, Galatasaray and Fenerbache all registering an interest.
The 28 year old only moved to Chelsea in January, and has scored just seven goals in twenty-nine appearances for the club.