Aldridge also insisted the Old Trafford crowd will not be a factor.
He told the Daily Post: “You have to go to Manchester United and not be intimidated. To be honest, the atmosphere at Old Trafford is not what it was since, as Roy Keane said, the prawn sandwich brigade arrived.
“How will we do? I think we'll be okay. Put it this way - if any team will be intimidated, it's United, and we'll have to see what Jose Mourinho's tactics are.
“Will they come out and have a go at us? I don't think so. He'll play it canny and play for a 1-0."