Olympique Marseille striker Andre-Pierre Gignac is to undergo groin surgery and will be out of action for about six weeks, the club said on their website on Friday.
Marseille, who qualified for the Champions League last 16 with a comeback win at Borussia Dortmund earlier this week, take on Girondins Bordeaux on Saturday.
"Nine points is what we need. If we can do this, we'll spend good holidays. But right now, we have zero points from nine available," coach Didier Deschamps told reporters.
"We want to be back in the Champions League. Obviously it's a slap in the face and it can do some damage, but we will now see how the squad reacts," Mavuba was quoted as saying by sports daily L'Equipe on Friday.
Paris Saint-Germain midfielder Clement Chantome is out of his team's trip to Sochaux on Saturday with a thigh injury, PSG coach Antoine Kombouare said on Friday.
"He's definitely out," Kombouare told a press conference.
"Our confidence is growing, especially on away matches. We definitely stand a good chance of winning this game," the Cameroon full-back told reporters on Thursday.
