Leicester boss Ruud van Nistelrooy believes Manchester United are in a "better place" than when they beat the Foxes in February.
Harry Maguire's injury-time header - which should have been ruled out for offside - gave United a 2-1 FA Cup win.
Since then, United have lost once in the Premier League and reached the quarter-finals of the Europa League, after a 5-2 aggregate win over Real Sociedad, although were knocked out of the FA Cup by Fulham on penalties.
They go to King Power Stadium on Sunday 14th in the table.