Freddie Burns - a major influence in driving Gloucester into April's quarter-finals - should be back in action in two weeks.
The outside half contributed 70 points in four tournament appearances as Gloucester made it six from six but is now sidelined for a fortnight with a knee injury.
England head coach Stuart Lancaster has confirmed that Burns will miss the RBS 6 Nations kick-off against Scotland at Twickenham on Saturday, February 2.
But the 22-year-old, who has amassed 192 points in just 19 European appearances, should still be fit for the majority of the tournament as his left knee medial ligament damage is not serious.
Burns limped out of Saturday's 36-16 victory over Mont de Marsan after 12 minutes, with Director of Rugby Nigel Davies hoping afterwards the knee knock would only be a recurrence of a pre-season complaint.
"Burns' knee injury is nowhere near as bad as it could have been, and that's very positive," said Lancaster.
"He'll miss a couple of weeks but no more than that."
Gloucester's forwards coach Carl Hogg said the news on Burns is a boost.
Hogg added: "It's great news on Freddie, I'm sure he'll be as relieved as anyone."
As part of the build-up to next month's Cardiff 2014 Heineken Cup and Amlin Challenge Cup finals weekend, ERC has joined forces with the WRU, Cardiff Blues and adidas to develop an annual grassroots community rugby programme targeting young players.
The Ulster Rugby full back, Jared Payne (No 15), has been suspended for two (2) weeks following an independent Disciplinary Hearing in Dublin arising from the Heineken Cup quarter-final match against Saracens at Ravenhill Stadium on Saturday, 5 April.