Lucho Gonzalez has confirmed to Marseille that he wishes to leave the Ligue 1 club in the summer.
The Argentine playmaker has two years remaining on his current contract with the French side but will look to move on following a chat with chairman Jean-Claude Dassier.
The club is now adamant that the 30-year-old will not leave L'OM and Stade Velodrome for less than €13million.
The experienced midfielder has been a mainstay at the club since arriving from Porto in 2009, winning the league title in his first season in France.
Dassier told L'Equipe: "Lucho, who is under contract until June 2013, has to find a solution before the end of June.
"Then, the doors will be closed."
With Gonzalez looking likely to leave the club, Marseille's interest in Lorient midfielder Morgan Amalfitano is expected to increase.