England prop Alex Corbisiero has been ruled out for ten weeks according to London Irish director of rugby Brian Smith.
Corbisiero has struggled with a knee injury throughout the current season - although he returned for the November Internationals against South Africa and New Zealand.
The news from Smith suggests that the loosehead prop has undergone another surgical procedure on his knee and will now certainly miss the Six Nations and possibly the rest of the season.
"Unfortunately for Corbs he had further surgery. The information our medical team have been given is that it is likely to be a 10-week injury," said Smith to TalkSport.
"I'd like to think he could get back on the park for us before the end of the season. There are still major question marks about that. He has a significant injury and he needs to be managed well."