Doncaster manager Sean O'Driscoll is considering another loan move as cover for Billy Sharp.
The striker is set to go under the surgeon's knife to rectify a hernia problem which recently kept him out for three matches.
Sharp also missed a month earlier this season after tearing his hamstring and O'Driscoll temporarily brought in Sunderland striker David Healy, who is now with Rangers.
The Doncaster boss is now considering another foray into the loan market, although he already has six players in on loan and he can only put five on the team-sheet.
He said: "The likelihood is that Billy will be in for surgery, hopefully before the end of the week.
"The sooner we can get it done, the sooner we can get him back. I can't imagine that he would be fit for the next month or so.
"It was always going to come and it could have been worse in the sense that it could have been a month ago when we had so many games.
"It leaves us a little bit short on the ground striker-wise. It may be that we have to bring somebody in, but that would mean I would have seven loan players and I can only put five on the team-sheet, so that gives us an added problem.
"It's been a season of problems that we have to try to surmount. There's nothing we can do about it, so we soldier on."