[Winrew]

Chesterfield are able to call upon influential midfielder Derek Niven following a suspension.

But forward Adam Smith requires a knee operation and is likely to miss the rest of the season.
Bristol City duo Jamie McAllister and Enoch Showunmi return to contention for the trip to Chesterfield.
Defender McAllister has missed the last four games with a calf injury while striker Showunmi has been struggling with a groin problem. <!-- E SF --><!-- E BO -->