Gunnarsson has a shin injury whilst McPake has a back injury and Gary Deegan and Leon Barnett have been placed on standby just in case the pair are not fit enough to face a troubled Rangers side.
Gunnarsson - shin injury
Speaking about the injuries, Chris Coleman told the CT: "James has got a very stiff back, so we will wait to see how he is and Aron came off in the game with a bang on his shin, so he may not be able to start but Gary Deegan did very well when he went on so there is food for thought for me."
Freddie Sears is expected to be included in the squad but could start on the bench.
For QPR, Marcus Bent is definitely out with a hamstring injury and is likely to be replaced by Tamas Priskin. Peter Ramage, Akos Buszaky and Adel Taarabt are all available but Mikele Liegertwood.
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