Alexandre Dumoulin an injury doubt for France's Six Nations opener against Italy
France centre Alexandre Dumoulin faces a race to prove his fitness for the RBS 6 Nations opener against Italy next week after being told to rest his left knee.
The Racing 92 player suffered the knock in Saturday's defeat to Glasgow in Kilmarnock, and had to sit out the final day of France's pre-tournament training camp on Tuesday, with Maxime Mermoz called in as a replacement.
A statement from the French Rugby Federation (FFR) said Dumoulin "was suffering from a trauma to his left knee".
"In agreement with the Racing 92 doctor, he was looked after by the France medical team yesterday and today," the statement added.
"The medical examinations carried out this morning didn't show anything serious but a period of rest is necessary.
"In consultation between the two parties, the club and the France team, Alexandre is rejoining his club to continue his care."
Dumoulin, 26, has played eight times for France, appearing in four of the team's World Cup matches in the autumn. Mermoz, 29, has 30 caps.
France begin their Six Nations campaign against Italy at the Stade de France on February 6, the first match in this year's competition.