Danny Wilson has paid tribute to the job Richie Barker has done since taking over Crawley Town.
Ahead of Saturday's clash, Wilson spoke of his admiration for what the Red Devils have achieved under Barker's stewardship this season and the Blades boss sees Town as serious promotion challenges.
Sheffield-born Barker played under Wilson at Hartlepool.
Wilson said: "Richie (Barker) has done very well in galvanising the team since Steve Evans left to join Rotherham. They are ideally positioned to mount a play-off push and they will fancy their chances.
"Last week they had a terrific win at Stevenage and we won't go there without giving them the utmost respect. We won't get anything if we don't go there and roll up our sleeves, but we are confident we have enough quality to win the game."
Wilson isn't concerned by the state of the playing surface at the Broadfield Stadium.
He concluded: "We aren't concerned about the weather; we can't do anything to influence that. We want the game on; we are prepared and want to start the Christmas period on Saturday."