Bury manager Alan Knill could be missing Tom Lees and David Worrall due to flu for the visit of Macclesfield.
The pair have been struggling with a virus over the festive period and Knill admits they are doubtful.
Knill is still undecided about whether to call on goalkeeper Cameron Belford following his recovery from a fractured cheekbone.
The loan of Lees from Leeds has been extended until the end of the season, giving the Shakers a major boost as they bid to secure promotion from npower League Two.
The Gigg Lane outfit lie third in the table, despite not playing since December 11, and Knill said: "The foundations are there now - we have put ourselves in a strong position."
Macclesfield boss Gary Simpson will again be without defenders Carl Tremarco and Shaun Brisley.
The pair remain sidelined with hip injuries but Ricky Sappleton and Richard Butcher were back in action at Oxford on Tuesday after injury.
However, strikers Emile Sinclair and Vinny Mukendi missed the 2-1 reverse at the Kassam Stadium through injury and are both doubtful to face the Shakers.
Simpson said: "I'd be surprised if Vinny is going to be fit. There's a chance Emile might be available but we probably won't know until the day."
Simpson, meanwhile, admits Sappleton is not ready to play 90 minutes yet as he works his way back to full fitness and is set to start with him on the bench again.
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