Austin (foot) and O'Callaghan (abdominal strain) could be needed for the trip to Gresty Road with Chris Morgan suspended and Paul Gibbs struggling with a side strain.
Early team news for Crewe v Barnsley
Austin (foot) and O'Callaghan (abdominal strain) could be needed for the trip to Gresty Road with Chris Morgan suspended and Paul Gibbs struggling with a side strain.
Meanwhile, with Cheltenham through to the Third Round the FA Cup it means that their game against Barnsley which was due to be played on Saturday 4 January will have to be rearranged.