Blackwell rates Beattie touch and go.
Chris Armstrong has been ruled out for up to a fortnight. Lee Martin and Danny Webber are both seeing surgeons for their injuries. The injury for the two may lead up to a operations which would rule the pair out for the rest of the season.
Nick Montgomery has a broken foot and he will not return to playing for the Blades for a while as he sustained a broken metatarsal in the home game with Barnsley.