James Hume sustained a significant knee injury during Friday night's BKT United Rugby Championship game against Cardiff. He will see a specialist knee surgeon this week.
Jake Flannery (thigh), Tom O'Toole (ankle) and Nathan Doak (groin) also suffered injuries during the same game and their availability for selection will be monitored through this week.
Steven Kitshoff suffered a knee injury against Clermont in the EPCR Challenge Cup Quarter-Final fixture and following a scan and specialist opinion it has been determined that unfortunately this is season- ending.
He will travel back to South Africa this week, where he will see a knee specialist to decide on the required treatment plan.
Squad updates in association with The Ulster Independent Clinic.