Warnock has been strongly linked with the vacant manager's job at QPR and would only confirm after Wednesday night's 3-1 FA Cup fifth-round replay defeat to Aston Villa that he will be in charge for at least one more game.
Striker Stern John, winger Kieron Cadogan and full-back Lee Hills all missed the defeat at Villa Park as they were cup-tied but the trio return to contention for Saturday's Championship clash at the Keepmoat Stadium.
Midfielder Neil Danns passed a fitness test on a back injury to play virtually the whole match against Aston Villa on Wednesday night and is set to keep his place in the side.
Striker Sean Scannell was an unused substitute at Villa Park following a hamstring injury and is again available for selection.
Long-term absentee Paddy McCarthy is back in non-contact training as he continues his recovery from a shoulder problem.