Queens Park Rangers defender Armand Traore has been ruled out for two weeks with a hamstring injury.
The 22-year-old picked up the problem during Wednesday's 3-2 win over Liverpool at Loftus Road.
"Armand Traore is unavailable," Hughes told reporters. "He got injured before half time in a clash with Charlie Adam.
"Unfortunately, he hasn't made it. He has got a grade one hamstring injury so he could be out for a couple of weeks."
Traore is expected to return for the R's clash against Manchester United at Old Trafford on Sunday, April 8.