Charlton are without Chuks Aneke and Aaron Henry for the visit of Oxford.
Aneke is still sidelined with the calf injury he suffered in pre-season but should be back in full training next week.
Henry suffered a knee injury playing for the club’s under-21s and Charlton are awaiting the results of a scan.
Boss Ben Garner also revealed one unnamed player is a doubt through illness.
Oxford skipper Elliott Moore and striker Matty Taylor are close to returning.
Moore has been out for six weeks with a thigh injury and Taylor has had a groin problem.
Sam Baldock and Josh Murphy are back in light training.
Ciaron Brown, James Golding and Jodi Jones all returned unscathed from international duty.
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