Ulster will be without scrum-half Paul Marshall and new signing Charles Piutau for their PRO12 clash with Treviso this weekend.
Marshall suffered a rib cartilage injury in the 29-8 win over Dragons last Friday. He is likely to return to play later this month.
Craig Gilroy suffered concussion in the same game and continues to follow the return to play guidelines.
Piutau suffered a minor thumb injury in training this week. He will sit out the game versus Treviso and should be available for selection next week.
Several other players are still recovering from mid or long-term injuries.
Chris Henry and Wiehahn Herbst are rehabbing well following their respective shoulder and groin surgeries. Both players are likely to return to action within the next eight weeks.
Ricky Lutton and Johnny Murphy are currently unavailable due to groin injuries but should return to play within the next month.
Both Dan Tuohy and Tommy Bowe are entering the final stages of their rehab following their respective ankle (right) and knee (right) injuries. It is hoped that both players will be available for selection within the next 4-6 weeks.
Peter Nelson continues to progress his rehab following surgery on his left mid foot injury (suffered December 2015 v Edinburgh). As yet, no return to play date has been set.
Marcell Coetzee continues to rehab following successful knee surgery. He is expected to make his Ulster debut in January 2017.