Loan arrival George Elokobi has been ruled out for the remainder of the season after fracturing and dislocating his ankle during the weekend's 3-2 loss to Leeds United at Ashton Gate.
Visiting Millwall go into the match in the Championship's relegation zone following a slow start to the new season.
A positive result against the Robins will have to be achieved without skipper Paul Robinson, who has a groin injury.
Bristol City: LDWLLW
Bristol City: Heaton; Foster, Wilson, Fontaine, Carey; Adomah, Kilkenny, Pearson, Woodford; Stead, Baldock
Millwall: Forde; Lowry, Shittu, Smith, Dunne; Batt, Abdou, Trotter, Henry; Keogh, Henderson
Sports Mole says: 2-1