The Blades were impressive in a 2-0 win against Watford at the weekend and have no new injuries or suspensions to report.
Ched Evans, the £3million summer signing from Manchester City, marked his home debut in the Championship with a goal against the Hornets and he will lead the line alongside Darius Henderson once again.
Goalkeeper Mark Bunn will start once again after marking his return to the side with a clean sheet after being preferred to the experienced Ian Bennett.
Midfielder Lee Hendrie is available for selection after serving a suspension but Lee Williamson is not in contention due to a back injury.
Meanwhile, Blackwell has revealed defender Derek Geary is facing a battle to save his career as he is struggling to recover from a long-term knee injury.