Brighton striker Fran Sandaza needs a late fitness check for the leaders' trip to Charlton.
The recent signing from Dundee United missed last weekend's 1-1 draw with Bournemouth due to a thigh injury and has visited a specialist in his Spanish homeland.
Winger Kazenga LuaLua, who scored against the Cherries, has an ongoing hamstring problem but should be able to start.
Captain Gordon Greer is fully fit after a calf injury but looks likely to have to settle for a place on the bench again with Adam El-Abd and Tommy Elphick continuing at centre-half.
Alan Navarro is the only definite absentee with the midfielder targeting a return from his ruptured cruciate ligament in February.
Radostin Kishishev returns to The Valley, where he made 200 appearances in seven years with the Addicks.