Han-Noah Massengo will face a late fitness test to determine whether he will be available to face Swansea on Sunday while Callum O'Dowda is out for up to six weeks with a knee injury.
Massengo hobbled off after 17 minutes in Bristol City's 2-1 victory over Reading on Wednesday after landing awkwardly on his hip before being replaced by Joe Williams.
Assistant Curtis Fleming was initially optimistic that the 20-year-old will be fit for the trip to Wales but manager Nigel Pearson suggests it will be a 50/50 whether Massengo has recovered in time and they will have to reassess his situation on Saturday.