QPR were on Monday morning assessing captain Geoff Cameron to see if he is likely to be able to return against Bristol City.
Cameron sat out the defeat at Brentford after picking up a knock during last week’s home win against Rotherham.
Rangers hope he will be available for Tuesday’s game.
They will be without Todd Kane, who is suspended after being sent off at Brentford.
Manager Mark Warburton said: “We lose Todd Kane because of the decisions to give him the two yellow cards.
“We want to see how Geoff is this morning – how he reports back. We’ve got a few knocks.”