The absence of Michael Doyle and Ryan Flynn (both suspended) means Danny Wilson will be forced into at least two changes for the visit of Bury to Bramall Lane.
The duo both start three-match bans after the FA refused to overturn the red cards they were shown at Glanford Park.
Loan recruit Paul Gallagher, who joined from Leicester City on Thursday morning, is expected to make his debut against the Shakers.
Wilson, though, says it is unlikely that Dave Kitson or Chris Porter will feature: "Dave (Kitson) is fit but whether he is included in the 18 is a matter we are looking at as we speak. Chris (Porter) is back in training but is a week or two off returning to the squad."
Meanwhile, the visitors arrive in South Yorkshire winless after five league matches and boss Peter Shirtliff could make changes, with Marcus Marshall, Lloyd Elford-Alliyu and Shane Byrne all pushing for a start.