Kevin McLaughlin faces a spell on the sidelines after it was confirmed that the Leinster flanker will undergo shoulder surgery.
The 30-year, capped eight times by Ireland, suffered the injury in his side’s 21-11 Pro12 win over Connacht at the RDS on 20 December.
Meanwhile, Leinster coach Matt O’Connor has reported no new injury concerns ahead of the visit of Ulster on Saturday.
Marty Moore, Fergus McFadden and Ben Te'o have all taken a full part in training this week and are now available for selection, while Cian Healy and Sean O'Brien continue to make excellent progress and are still on track for a return in the next few weeks.
However, Dominic Ryan is still being assessed under the return to play protocols on the back of the injury sustained in the first half of the 28-13 defeat to Munster on St Stephen’s Day.
The Leinster team to face Ulster will be announced on Friday afternoon.
