The Dakar-born player made 42 appearances in all competitions last season, scoring 7 and providing 3 assists.
The 26-year-old is has scored 16 goals from midfield over the course of the last two seasons.
The Turkish side are believed to want around £8.5m for the player, who is expected to make the switch to England this summer.
Several sides are believed to be considering a move for the player, including Crystal Palace and Sunderland.
The player is thought to be keen to test himself in the Premier League and according to 'The Daily Mail', Osmanlispor's general manager revealed this week that the club has an agreement in principle with an English side.