Leinster will be without Adam Byrne for several months after the winger suffered a setback during his recovery from a hamstring injury.
The 26-year-old had returned to training last week after a lengthy period on the sidelines. But head coach Leo Cullen has confirmed that he sustained a "significant" quad injury which required surgery during the final stages of his rehab for a hamstring issue and will be unavailable for "a number of months".
Ahead of Saturday's Guinness Pro14 match against Glasgow Warriors, Leinster confirmed that Scott Fardy will follow the Graduated Return to Play Protocols this week after undergoing a Head Injury Assessment in the win over Dragons.
Michael Bent, Rory McLoughlin and Scott Penny are set to be available for selection, while Jimmy O'Brien was assessed after training for a hamstring injury and has been passed fully fit.
Ciarán Frawley will also have a minor shoulder injury assessed before a decision is made as to his availability but Tommy O'Brien will be absent for a number of weeks after suffering a hamstring injury upon his return to training from an ankle problem.
Caelan Doris (concussive symptoms), Dan Leavy (knee), Conor O’Brien (knee), Max Deegan (knee) and Vakh Abdaladze (back) remain unavailable for selection.