"I expect them to be at full tilt," said Chris Wilder when asked to assess Saturday's opponents, Nottingham Forest.
There will be a sold out away section when the Blades visit the City Ground in the Sky Bet Championship and the United boss is looking forward to the encounter.
He said: "This is top end Championship football against a very powerful, traditional football club and we have to play well.
"I really enjoy going to Forest, it a great ground, we have sold out again, and we are really looking forward to the game. We have to go and deal with a good and talented football team, they took the game to Leeds last weekend and will be disappointed with the manner that they were pegged back.
"I'm not paying attention to their defeat in the cup in midweek, I expect them to be at full tilt and if they win two or three on the spin that will catapult them into the top positions.
"They are going well, their manager is an experienced one who has had a promotion out of this division and we will be have to be at it to get a result."