Jacob Stockdale sustained a facial fracture in Saturday's Challenge Cup semi-final against Exeter Chiefs. He will see a maxillo-facial surgeon this week to further assess the injury.
Stuart McCloskey (hamstring) and David McCann (knee) were also injured in the game and will have MRI scans to assess the extent of these injuries.
Angus Bell (foot), Rob Herring (calf) and Scott Wilson (ankle) have reintegrated into team training and their fitness for selection for this week will be assessed.