Donnelly was forced off after sustaining an unspecified injury in last week's defeat at Dagenham & Redbridge and was replaced by Graham Cummins, who could return to the starting line-up.
Hill has no other new injury or suspension worries as his side bid to bounce back to winning ways with a sixth successive home victory.
Skipper Peter Cavanagh (Achilles) remains a long-term absentee, while striker Scott Hogan is scheduled to return to training in a fortnight following a heel injury.
- Sports & Recreation
- Graham Cummins