Ralph Hasenhuttl is hopeful Armando Broja and Adam Armstrong will be fit to face Crystal Palace on Wednesday.
Both players were injured in the 3-0 loss to Arsenal last weekend.
Hasenhuttl told reporters: "We are happy that the injuries are not too serious, so it looks good.
"Both couldn't train today, so we will have a look if it is early enough for Wednesday or if the game comes too early for them.
"We don't know it yet, but it doesn't look that bad."
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