Manchester United boss Ralf Rangnick says they must match Everton's physical qualities tomorrow.
Saturday's opponents Everton are just a point above the relegation zone and Rangnick says both sides are aware of the importance of the game.
"Our game plan and tactics is one thing tomorrow, but the other thing and, probably the most important thing, is our mentality, attitude and physicality," said Rangnick.
"These factors will decide [the game].
"Character, energy and commitment [will be important] to winning the game in that atmosphere, which will be similar to the one at Leeds.
"We're all aware of the importance of the game for both sides."
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