Rob Baloucoune (hamstring) and Sean Reffell (ankle) were both injured in Saturday's Round 12 BKT United Rugby Championship game versus Benetton Rugby in Treviso.
Matty Rea sustained a foot injury playing for Ulster ‘A’ away against Ealing Trailfinders last Friday.
As a result of these injuries, all three players are currently unavailable for selection.
Marty Moore's recent MRI scan confirmed he has torn the anterior cruciate ligament in his right knee, and he will see a knee surgeon this week.
Squad updates in association with The Ulster Independent Clinic.