Connacht must plan their season without Willie Faloon who could be out of action for six months.
The flanker was replaced in the 46th minute when playing against his former club Ulster on Saturday with a suspected broken foot.
Coach Pat Lam is awaiting results of a scan on hooker Jason Harris-Wright who tore a bicep in Saturday’s game, which rules him out of this week’s fixture against the Ospreys, while Dave McSharry and Denis Buckley are back training, but unavailable.
Craig Clarke is available for selection.