Ruben Amorim said Manchester United's FA Cup win over Leicester City had nothing to do with "Fergie time" and took responsibility for another poor Red Devils display.

Harry Maguire headed a controversial 93rd-minute winner as United fought back at Old Trafford, avoiding an embarrassing exit from the tournament they won last season.

The goal stood despite replays showing Maguire was clearly offside, with VAR not introduced in the 2024-25 edition of the FA Cup until the fifth round.

Former Leicester centre-back Maguire became the first United player to score a winning goal in second-half stoppage time in the FA Cup since April 2016, when Anthony Martial did so against Everton in the semi-finals.

United went on to lift the trophy under Louis van Gaal that season, but Amorim saw few reasons to be positive on Friday.

He laid into United's performance and suggested they need to move on from the notion of "Fergie time", having earned a reputation for late winners under the legendary Alex Ferguson.

"We had to believe until the end but this game has nothing to do with the time of Fergie," Amorim told ITV Sport. 

"I think the performance... we have to do so much better with the ball and without the ball. We didn't have any energy in the beginning, especially in the first half. 

"Then in the second half we played a little bit better, with a little more speed, winning second balls. 

"We managed to turn things around so it was a good result, but not a good performance."

United had just two shots – neither of them on target – before half-time, accumulating a paltry expected goals figure of just 0.04 xG before the break, to Leicester's 0.84.

That xG figure is the worst United have recorded in the first half of any game across all competitions this season.

Five of their worst six performances by that metric – excluding September's 3-0 loss to Liverpool under Erik ten Hag – have come under Amorim. Four of those five matches have seen them fail to muster a single shot on target in the opening period.

Amorim said he must take the blame for United's continued attacking shortcomings, adding: "The coach is the first responsible. 

"When a team doesn't perform, doesn't improve, it is the coach. But we are here to do things and to see the game, to study the game and try to improve for the next game.

"I think it's the small things, if you see the games sometimes, we need to control the ball, to have the ball, don't give the ball away in the first pressure. 

"It's the small things, it's the big things, it's everything. At the moment, it's hard away but especially at home. We have to cope with that and we will try to do it next game."