Ruud van Nistelrooy fumes at 'offside goal' decision as Leicester exited FA Cup late on at Manchester United

Ruud van Nistelrooy was furious after an "unacceptable" and "unthinkable" error saw Harry Maguire's offside winner stand as Leicester exited the FA Cup at his former club Manchester United.

The Dutchman started the season as one of Erik ten Hag's assistants and stepped up as interim manager, before being let go by Ruben Amorim and swiftly taking up the job as Foxes boss.

Bobby De Cordova-Reid's first-half header had Leicester dreaming of a fourth-round win at Old Trafford, but substitute Joshua Zirkzee levelled after United reacted to being booed off at the break.

Extra time beckoned until Maguire headed home to make it 2-1 deep in stoppage time, sparking bedlam in the stands and fury among the Leicester ranks.

The United defender had clearly strayed offside when the ball was sent over, but VAR is not introduced until the next round.

"It's a hard one to take because the game was decided on a mistake," Leicester manager Van Nistelrooy said. "It was clear.

"It's not a matter of VAR, where you have to look at millimetres. It was half a metre. It was clear.

"The team didn't deserve to lose the game in this way because they fought, they played well, dominated the game for a long bit, leading 1-0 and, yeah, that's how you feel after this."

Harry Maguire's last-minute header sealed a 2-1 win for defending champions Manchester United, sending them into the #EmiratesFACup fifth round