Ireland and Munster lock Tadhg Beirne is a doubt for the URC clash with Leinster this weekend.
Beirne has been sent for a scan on a groin injury which will concern national head coach Andy Farrell ahead of the November internationals.
Fellow internationals Iain Henderson, James Ryan, Kieran Treadwell and Ryan Baird are all out injured.
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Munster are also sweating over the fitness of Craig Casey, Edwin Edogbo and Stephen Archer while Roman Salanoa is following the concussion return to play protocols.
