But how could the Blades line up in the game? Our man Danny Hall picked his predicted team for the game, with Saturday’s trip to Chelsea in mind. What team would you pick? Let us know in the comments below, or on Twitter.
1. Simon Moore
With Dean Henderson United's current No.1, Moore is likely to get the chance to impress in the cup game against Blackburn Photo: The Star
2. Kieron Freeman
George Baldock has started the season in great form, knowing that Freeman is breathing down his neck Photo: Aitor Alcalde
3. Phil Jagielka
His only competitive action this season has been a few minutes in the dying stages of the Crystal Palace win, so this is a good chance to get some minutes in the veteran's legs Photo: Nathan Stirk
4. Richard Stearman
If John Egan is rested, Stearman is the perfect replacement at the heart of United's back three Photo: Simon Bellis