Chris Wilder felt the fans played an in instrumental role in the Boxing Day victory over Derby County.
The Blades boss remarked: "It was a proper atmosphere and hopefully that can be repeated again on Saturday.
"We should be backed and pushed in the right way, sometimes we need to lift these good players who want to win and have the desire and drive to succeed.
"They are doing remarkably well, we've rarely been out of the top six in the last 18 months and if we can add that bit of quality we could enjoy an interesting second-half to the campaign."
Wilder added: "The skipper has been outstanding, John Fleck too after a quiet period. It takes bottle and courage when you aren't at your best to get yourself out of a hole.
"Whoever we bring in has to get past these lads, these have got to stand up to any challenge that comes for their shirt."