Oldham will be without attacking midfielder Chris Taylor.
Taylor's season looks to have come to an end after he suffered ankle ligament damage during Tuesday night's defeat at Brentford, and the 25-year-old may have played his last game for his hometown club after rejecting a contract extension.
On-loan Manchester City forward Harry Bunn and winger Keanu Marsh-Brown are vying to replace Taylor in boss Paul Dickov's starting line-up.
Felipe Morais - who netted a late equaliser when the Latics claimed a 1-1 draw at The Valley earlier in the season - started his first game in midweek since suffering concussion in a car accident and came through unscathed, while captain Dean Furman and forward Robbie Simpson have suffered no adverse reactions on their recent returns from respective knee and toe problems.
Goalkeeper Alex Cisak (shoulder) remains on the sidelines alongside long-term absentees Paul Black (hamstring) and James Wesolowski (shoulder).
Oldham's season is in danger of petering out after a run of seven defeats in their last nine outings.
Darel Russell is Charlton's only absentee for the trip.
The on-loan Preston midfielder serves the second game of a four-match ban after receiving his second red card of the season against Huddersfield a fortnight ago.
Dale Stephens deputised in the 2-0 win over Leyton Orient last Saturday and should keep his place against his former club.
Boss Chris Powell has an otherwise fully-fit squad available with skipper Johnnie Jackson back in training after an Achilles injury and striker Danny Haynes shaking off a hamstring problem.
Jackson could reclaim his place on the left wing, although Powell does not need to rush him back after Lee Cook enjoyed a successful debut against Orient following his loan switch from QPR.
