Captain Mark Hudson and Jose Semedo are suspended after both being sent off on Saturday, which could see Martin Cranie partner Linvoy Primus in the centre of defence.
Yassin Moutaouakil could make his first start since the win over Reading with Semedo out, and if Kelly Youga starts at centre back, Grant Basey may start at left back.
Possible side for Bristol City: Weaver, Moutaouakil, Cranie, Primus, Youga, Ambrose, Holland(c), Bailey, Bouazza, Todorov, Varney
Subs: Elliot, Basey, Sam, Gray, McLeod