According to various reports, The 27 years old midfielder is also aiming to leave the club this summer due to his lack of regular playing time all through last season.
Two English clubs which include Chelsea and Newcastle United have shown interest in the France midfielder but Chelsea are the front-runners to sign him after holding internal talks with his agents.
The English Premier League giants Chelsea are planning to submit around 17 million euros to bring him to Stamford Bridge next season.
According to various reports, The Blues have reportedly offered him 173,000 euros weekly basis to convince him to join the club this summer.
In his three years stint at the club, The 27 years old playmaker won 1 Italian Seria A title, 1 Italian Cup title and 1 Italian Super Cup title.