Brentford manager Thomas Frank is unsure if his team is going to Old Trafford at the right time.
With Manchester United reeling after two straight losses, Frank knows they will want to prove a point.
While they have beaten United at home, Brentford will want to finally get a result at Old Trafford on Saturday.
"The flipside is that they need to bounce back and come flying out to do everything they can to beat us," Frank told reporters.
"There will be pressure to beat Brentford but Man United is a massive club, the pressure is there to win every game.
"I don't think it makes a difference that they haven't played that well. I am always in doubt when you meet a team with great form and momentum, whether it's bad or will that run end?
"It's a great club, great team, great manager and fantastic players. A big challenge but we look forward to it and we'll go there believing we can get something out of it."