Connacht’s abrasive backrow forward, Willie Faloon, will miss half the season after suffering a foot injury in the 18-7 loss to Ulster last Saturday.
The Ballynahinch and former Ulster player requires surgery on his right foot.
It is a major blow for the 27-year-old who is out of contract at the end of the current season and will miss up to five months of the season.
Hooker Jason Harris-Wright also left the pitch with an injury in the opening half of last weekend’s game.
A scan yesterday revealed that the 25-year-old tore his bicep and is looking at 4 - 6 weeks on the side-lines.
Meanwhile, Dave McSharry and Denis Buckley have stepped up their rehabilitation in recent days and have re-joined training.
They remain unavailable for selection ahead of the visit of Ospreys to the Sportsground on Saturday evening.
Craig Clarke, who made his debut for Connacht last time out, trained this week and is in the frame for selection.
Irish international Robbie Henshaw was involved in a two-day Ireland training camp in Kildare in the early part of the week and will return to Connacht training tomorrow ahead of the game on Saturday.