Karl Robinson says Ben Reeves will play no part in Charlton’s clash with Peterborough on Tuesday.
Reeves aggravated a hamstring injury against Rochdale in midweek and missed the 2-0 defeat to Scunthorpe.
The Addicks are also without injured duo Tariqe Fosu and Billy Clarke - leaving Robinson short in the offensive department.
The Valley boss said: “As he [Reeves] stretched for the ball someone pushed him which extended his hamstring.
“He won’t be fit for Tuesday but it’s not a serious one. Could we rush him to get back? Possibly, but I’d rather lose him for one or two games than six or seven.
“That's the key message - we've got one league game [against Peterborough] and then the next ones are in the FA Cup and Checkatrade Trophy.
“We’ll then have our eye on Portsmouth and we’ll have them [Fosu, Clarke and Reeves] all back for that.”
Mark Marshall suffered a serious knee injury in pre-season and was being eased into the team last month.
But Charlton’s shortage in attacking players has seen Marshall start three league games in seven days.
Robinson added: “He’s a little bit fatigued but it is what it is unfortunately.
“We are where we are but then on top of that he should've scored last week and he should've scored today against Scunthorpe.
“We need to take those chances and he's frustrated with himself for not doing so.”
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