Defender Givet picked up a knee injury in the defeat at Everton last Sunday but, while he is not expected to have recovered in time for the weekend's game, he should be back to face Arsenal the following week.
Allardyce made 10 changes for the Carling Cup win over Nottingham Forest and, with all those players coming through unscathed, several could come into consideration for the Villa game.
Lars Jacobsen is in contention to return to the Rovers defence having missed last week's league fixture after his wife gave birth.
El-Hadji Diouf will be considered for selection despite an ongoing police investigation into allegations he racially abused a ball boy at Goodison Park.
Blackburn (from): Robinson, Salgado, Samba, Nelsen, Chimbonda, Diouf, Andrews, Grella, Pedersen, Dunn, Roberts, Brown, Jacobsen, Nzonzi, Emerton, Hoilett, Kalinic, McCarthy, Reid, Di Santo, Olsson, Jones.
Aston Villa 11/8, Blackburn 2/1, Draw 9/4