Collins was forced out of last week's defeat to AFC Wimbledon and although scans have revealed the injury is not as bad as first feared, the midfielder is unlikely to be risked, so Sean McAllister could return to the starting line-up in his absence.
On-loan Huddersfield striker Jimmy Spencer and summer signing Etienne Esajas (hamstring) made their first appearances off the substitutes bench last week and are in contention to start.
Matt Godden is hoping to return to the squad following a knee injury and fellow forwards Jamie Wootton and Jordan Clark, on loan from Barnsley, could also be recalled.
- Sports & Recreation
- AFC Wimbledon
- Jimmy Spencer
- Etienne Esajas
- Sean McAllister