The striker has already missed the majority of the season with a knee injury and picked up his latest knock while playing for the reserves.
Better news for John Sheridan is the return to training of winger Deane Smalley, who has recovered from a hip injury.
The 20-year-old has missed the last three games, but could be in line for his comeback in Saturday's game against struggling Brighton.
Smalley came through 90 minutes of a reserve team outing at Walsall on Tuesday night and suffered no reaction.
Oldham, bidding to make it four league wins in a row, will also have defender Reuben Hazell available after his one-match suspension for picking up five bookings.
Oldham meanwhile have cut prices for their clash with Leyton Orient later this month.
Adult tickets will be £10 as well as buy one get one free.
Admission prices for under 16s and over 65s have also been cut to £2 each when purchased before the day of the game.
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