Don't miss the Blades entertain Forest on Good Friday afternoon at Bramall Lane.
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Chris Wilder says 'perspective' is crucial as United enter the final four games of the Sky Bet Championship season, still very much in the race for automatic promotion.
On the challenge awaiting the Blades at Bramall Lane on Good Friday, the United chief remarked: "We're talking about a Nottingham Forest team that are managed by a manager that has won everything and an assistant manager that won everything as a player and somebody who has managed in the Championship and Premier League.
"Martin has managed at international level, Forest have spent big and added players to an already talented group, but like a few others in the Championship, they've struggled to make an impression to get into the top six."
Wilder added: "I'm not always one for perspective, but it is needed now. Some supporters might think we are done, but I'm done and the players aren't either, we've got to go and so that.
"We've got the fight in us and we've got to stand up now more than ever and I wouldn't be surprised if we get the right result on Friday.
"I've spoken to Harry (Bassett) this week and he reminded me of us getting done 4-0 at Leeds, imagine what it would have been like if we'd got beat like that.
"The prize to get into the old first division was big then, but nowhere near as how big it is now, he said some supporters will have chucked the towel in and it was great to speak to him, having been involved in one of the greatest days of the club's history back in 1990."