Ulster’s Ben Carson and Stewart Moore are doubts for Saturday’s Investec Champions Cup pool game with Bordeaux (15:15 GMT), but John Cooney could return.
In a squad update on Tuesday, the club said full-back Moore and centre Carson, suffered soft tissue contusions as they were forced off in the first half of Sunday’s heavy defeat by Toulouse.
Scrum-half Cooney, who has been linked with a move away from Ulster, missed the Toulouse game with a hamstring issue.
However, the 34-year-old has resumed training and will be monitored before Bordeaux’s visit to Kingspan Stadium.
Ulster have also confirmed wing Ben Moxham is set to miss the remainder of the season after tearing an anterior cruciate ligament in the United Rugby Championship defeat by Leinster on 29 November.
Last week, head coach Richie Murphy said the 23-year-old was set to see a knee surgeon and the club has confirmed he is expected to spend nine months on the sidelines.
Head coach Richie Murphy is already without Robert Baloucoune (calf), Jake Flannery (ankle), Jacob Stockdale (hamstring), Ethan McIlroy (ankle), Sean Reffell (ankle), James Hume (knee), Callum Reid (knee) and Tom Stewart (ankle).
Having been hammered 61-21 by holders Toulouse, Ulster are hoping to bounce back at home to Bordeaux, who are second in the France’s Top 14 league.
Bordeaux opened their European campaign with an impressive 42-28 win over Leicester on Sunday.
