"Steve will come into the reckoning on Saturday at some point. I'm still formulating plans for the play-offs," Blackwell told BBC Radio Leeds. "I've got to protect some players who are on a number of bookings, and one or two have niggles."
Both Shaun Derry and Sean Gregan, the latter having recovered from a rib injury, are just a trio of bookings away from a three-game ban and could be rested even though United need the points to book third or fourth place, which will guarantee the second leg of the play-off semi-final being played at Elland Road.