The duo played the full 90 minutes of Wales' friendly defeat in Montenegro and will be assessed by Billy Davies on Friday afternoon.
Nathan Tyson, meanwhile, should be fit despite missing training on Thursday after being stretchered off in the Carling Cup win over Bradford the previous evening.
Tyson, who set up two of the Reds' three goals against the League Two club, suffered a hefty blow to his left ankle under a challenge from Jonathan Bateson, who was shown a red card.
Centre-half Luke Chambers serves the second game of a three-match suspension following his red card against Reading on the opening day of the season.
Defenders Julian Bennett (knee), Kelvin Wilson (ankle) and James Perch (shin) and midfielder Guy Moussi (thigh) remain out.