Steven Fletcher will be assessed after sustaining a head injury at Derby on Saturday.
The striker came on from the bench on the hour mark but was withdrawn after clashing heads with Darren Bent on 77 minutes.
The Scot made a brave challenge at the back stick on defensive duty but paid the price and on Fletcher, Carlos Carvalhal said:
“The way that he plays is very brave, he is a gladiator. I must just say that I was very worried about him because he is a fighter.
“He got into that situation because he is a fighter. He saved a situation for us.
“To us it was not good either because the impact of that substitution was almost nil because the player played very few minutes.”
Carlos also issued updates on Keiren Westwood and Glenn Loovens, continuing: “Loovens in the morning felt a fever and must stay out but these things are part of the game.
“We are here to solve these kind of things. Westwood did a scan, he mentioned that he still felt pain but we are analysing day by day.”