By Simon Hunter
Ulster back row forward Marcell Coetzee once again faces time on the sidelines.
He'll have surgery to assess a left knee injury he picked up against Zebre at the weekend.
Tommy Bowe meanwhile is expected to be out for 8-12 weeks after a left ankle fracture playing for Ireland.
He underwent surgery on Tuesday.
Think I went a bit ott on working how I was gonna get to watch Cheltenham this week. Surgery all done and dusted...Back to recovery time pic.twitter.com/pGrF2lhKgF— Tommy Bowe (@TommyBowe14) March 14, 2017
Andrew Trimble is expected to be back in around four weeks' time, having had surgery on a left hand fracture sustained against Treviso.
Conor Joyce (right knee), Jonny Murphy (left shoulder) and Ross Kane (right thumb) sustained injuries in the Ulster A game against Munster A on Sunday afternoon.