Kenny Jackett hopes to have top scorer Neil Harris available after The Lions striker sat out the midweek win up at Carlisle United.
Chopper, who has hit 17 goals this season, will have a late fitness test to determine whether he makes an immediate return to first team duties.
Charlton are struggling for left-backs currently after loan signing Johnnie Jackson returned to Notts County after sustaining a hamstring injury in The Addicks' 2-0 win over Stockport County last weekend.
Fellow defender Kelly Youga could play, but is still some way short of match fitness after bone bruising in his knee. However, Grant Basey is out for the rest of the season with an ankle problem.
Youngster Chris Solly replaced Jackson against The Hatters and whilst he is a right-back by trade, he more than held his own so may step in once more.
Defender Elliot Omosuzi is no longer available, having returned to Fulham this week following a loan spell at The Valley.
Deon Burton has recovered from a persistent groin problem but may have to settle for a place on the bench after Akpo Sodje scored against Stockport.
Akpo's brother Sam is pushing for a recall if fellow centre-half Miguel Llera is chosen to fill the vacant left-back slot.