Ferguson said that it is a good chance to reach the quarter-finals so he expects whichever team he puts out to get through.
"We've come through Wednesday's game without any injuries," he told the club's official website. "That's the best thing, apart from the result of course.
"I'll make some changes for Monday night, even though it's an incentive to get to the quarter-final. I don't think that's lost on any of the players.
"There's a good spirit in place and they're all contributing. Whatever side I pick we're expected to qualify. That's what happens at United. Whatever team you play you're always expected to win."
United have got past West Ham United and Fulham to reach the fifth round.