Marseille midfielder Benoit Cheyrou will be out of action for up to three weeks after coming off with a thigh injury during his side's 2-1 victory over Brest at the weekend, the club confirmed on Monday.
"The medical staff predict a return to action in about 15 to 18 days," the club announced.
Marseille are currently second in Ligue 1 after the victory that kept them two points behind leaders Lyon.
The midfielder has made over 100 appearances for OM, scoring eight Ligue 1 goals. Cheyrou has previously played for Lille and Auxerre and has represented his country up to U-21 level.