The former Manchester United midfielder arrived at The Valley as a free agent this week after leaving Turkish club Genclerbirligi earlier this year.
Stewart will probably start on the bench with boss Chris Powell set to stick with the side which drew 1-1 with Southampton on Tuesday to end a run of three straight defeats.
Teenage full-back Carl Jenkinson was left out in midweek due to contract talks, and having since turned down a new deal he is unlikely to figure.
Striker Paul Benson serves the final game of a four-match ban and defender Kelly Youga (knee) and winger Johnnie Jackson (Achilles) remain in the treatment room.
Source: PA
Source: PA