His place is likely to be filled by Therry Racon, who will make his full league debut for the Addicks.
Addicks manager Alan Pardew said last week that Chris Powell and Matt Holland could return from injury for the game, but its more likely that only Holland will feature, and should be on the bench.
The defence will remain the same after a solid performance at St Mary's, which means youngster Grant Basey continues at left back.
The only other change may see Luke Varney, who set up Chris Iwelumo's winner on Saturday, replace Jerome Thomas, but that is if Pardew returns to a 4-4-2 formation.
Possible side for Bristol City: Weaver, Mills, Sodje, Fortune, Basey, Sam, Reid (c), Zheng, Racon, Thomas, Iwelumo
Subs: Randolph, Holland, Bougherra, Varney, Ambrose