Charles Piutau has bruising on his lower leg and will miss the trip to Galway.
Rob Herring suffered a concussion against 'Quins and will follow the return to play protocols.
This trio join the following players on the current injured list:
Rory Best (ankle)
Luke Marshall (Achilles)
Tommy Bowe (hamstring)
Marcell Coetzee (knee)
Johnny Simpson (wrist)
Kyle McCall (shoulder)
Rodney Ah You (wrist)
Jean Deysel (neck)
Jared Payne (headaches)
