Niasse has been linked with a move to Galatasaray in recent weeks just seven months after joining from the Russia side Lokomotiv Moscow.
The report states that Stoke City forward Marko Arnautovic is close to joining Everton.
Niasse’s future at Goodison Park looks to be in doubt after he was left out from the Toffees pre-season squad. The Senegal internation striker s managed just 152 minutes of competitive football since becoming Everton’s third most expensive player back in January.
The 26-year-old has been left out of the squads which faced Barnsley and MK Dons the last week and has played just 45 minutes of a behind-closed-doors match during the club’s Austrian training camp during pre-season.
Niasse is is no stranger to Turkey having first made a name for himself at Akhisar.