Marseille have been rocked by the news that centre-back Stephane Mbia will be sidelined for a month.
The Ligue 1 outfit confirmed on their official website that the defender suffered a significant injury to the junction of his quadriceps tendon in Sunday s Coupe de France win over Le Havre and will require a four-week spell on the sidelines.
The injury to Mbia could not come at a worse time for Marseille, given they are currently without a number of first-choice players because of the Africa Cup of Nations.
The 25-year-old, who arrived at the Stade Velodrome from Rennes in 2009, can also play at the base of the midfield.
Marseille are sixth in Ligue 1, nine points behind leaders Paris Saint-Germain, and travel to Stade Rennes in their next match on Sunday.