Team news ahead of big game at Deepdale
John Halls who replaced him at Oakwell will step in for the injured Irish man. Lee Martin, Danny Webber, Chris Armstrong and Nick Montgomery will all miss out due to long term injuries.
Rob Hulse and James Beattie will fight it out to who starts up front with on form Billy Sharp. Hulse's performance against Norwich impressed Blackwell so he probably will carry on in the striking role.
Predicted line-up for Sheffield United:
There will be a live match thread of the game on Saturday starting from 2:00pm here on Blades Mad.