Leinster will name their side later for this weekend’s Heineken cup clash with Castres
It was revealed on Thursday that Sean O Brien is set to be ruled out for the rest of the season due to his shoulder injury .
Matt O Connor also has current injury doubts over Rhys Ruddock and Arron Dundon
Simon Zebo is set to be named on the bench for Munster ahead of their trip to face Gloucester
Tonight Ulster welcome Montpellier to Ravenhil