Leeds boss Simon Grayson is waiting on the fitness of Tom Lees ahead of Saturday's trip to face Barnsley.

The youngster was taken out of the action at Derby on Boxing Day moments before half-time, following a clash of heads, and could be a doubt for the Oakwell trip.

"There was a clash of heads and we took him off," said Grayson.

"He was dazed, but he'll see the doctor and we'll see how he is."

Lees started the Boxing Day clash at right-back, the position where he started the season, after Darren O'Dea returned to the starting line-up to partner Paddy Kisnorbo at centre-back.