Marseille midfielder Mathieu Valbuena may face six weeks on the sidelines for the French club after dislocating his shoulder against Lille.
Sky Sports are suggesting that the 29-year-old picked up his injury in their 1-0 defeat to second in the table Lille on Tuesday night, in stoppage time.
OM's coach Elie Baup then came out to state the Frenchman will be out for a couple of weeks.
"If the recovery is good, he should be back in a number of weeks, three to four weeks maybe," a club statement read.
To which the club doctor reported Valbuena will be out for four to six weeks.
Marseille sit fourth in the French League and have won three of their last five games, having previously gone seven games without securing a win; and with conceding a late goal on Tuesday night, Baup believes it was a bad night for the visitors.
"Conceding a goal in stoppage time, along with our failure to score, and in addition, losing Mathieu Valbuena and Dimitri Payet to injury...it has been a tough night."
This season the 29-year-old attacking midfielder has been a key success to Marseille, having played 16 times this season, along with scoring one goal and grabbing three assists.
But the midfielder will be a big miss for the French side, with difficult games against Nantes, Borussia Dortmund and Lyon coming up in the next couple of weeks.
However, the 58-year-old coach has confirmed that his team will not change their style of play, even with the injuries.
"We should not change our idea of building play and our approach to the game."
The former Nantes manager has been under the spotlight recently, with his side sitting bottom of their Champions League group, and playing a weakened side against Arsenal last week, as Marseille need to improve going into the new year.
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