Munster are "playing a waiting game" on the fitness of skipper Paul O'Connell's fitness ahead of next month's Heineken Cup semi-final tie against Biarritz Olympique in San Sebastian..
The British & Irish Lions captain was a late withdrawal from the Munster side which beat Northampton Saints 33-19 in last weekend's quarter-finals with a groin injury.
O'Connell will also miss his side's Magners League clash against Connacht and is a major doubt for the trip to Spain for a re-run on the 2006 Heineken Cup final..
Munster team manager Shaun Payne said: "It is an injury that needs rest and we'll be taking that into account over the next few weeks leading up to the semi-final.
"It's not a broken arm or something where there is a defined recovery period. At the minute we're just playing a waiting game."
There was better news for wings Ian Dowling and Doug Howlett, who both underwent scans in the wake of the triumph over Northampton. Two-try hero Howlett suffered a hamstring strain, while Dolwing suffered a knee injury.
But both will be fit to face the French giants as Munster aim to reach the Heineken Cup final for the fifth time.
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.