Footage has emerged showing Antony’s irritation at being asked to play left back during extra time in Manchester United’s epic FA Cup win over Liverpool.

After scoring the dramatic late equaliser to force extra time, the Brazilian was switched into the unfamiliar position after Harvey Elliott had restored Liverpool’s lead at 3-2.

A new video has emerged showing Antony’s irritation and bewilderment at being asked by Erik ten Hag to slot in at left back during the second-half of extra time in Man United’s epic win

Marcus Rashford had to intervene to calm the stroppy Brazilian after the tactical switch

Antony had earlier forced extra time by scoring a dramatic late equaliser to make it 2-2

United boss Erik ten Hag went all-out attack in a desperate bid to salvage the game – and his team’s chances of winning silverware this season – by introducing midfielder Mason Mount for defender Victor Lindelof.

That meant a tactical reshuffle which saw Antony drop to left back and Bruno Fernandes slot in alongside Harry Maguire at centre half, with Mount, Scott McTominay and Christian Eriksen in midfield behind a front three of Marcus Rashford, Alejandro Garnacho and match-winner Amad Diallo.

A video filmed from the stands shows Antony breaking away from Ten Hag’s team talk at half-time in extra time and giving a ‘mind blown’ gesture before staring at his manager in disbelief.

He then sulks as he walks away and has to be told by Rashford and then Eriksen to get on with it. Even goalkeeper Andre Onana comes over to organise everyone before Antony complains to Rashford a second time.

The Brazilian then issues one more gesture of frustration to the bench and huffs before Liverpool get the second period of extra time underway.

Remarkably, Ten Hag’s novel tactics had the desired effect as goals by Rashford and Amad earned United a dramatic 4-3 win over their bitter rivals to reach the semi-finals.

‘Sacrifice, sacrifice, when the coach stated that, we found it a bit unusual, but sacrificing for the group, sacrificing for the team, that’s great with me,’ Antony added after the game, indicating that the happy outcome had definitely changed his perspective.

The £85 million winger had only scored once this season, in the FA Cup run against League Two Newport County, before to Sunday. It has been a difficult season for him.

But when Antony entered the game at Old Trafford to replace Rasmus Hojlund after 71 minutes, he immediately began the process of making apologies. He forced extra time with United’s equalizer at 2-2.

But halfway through extra time, Elliott’s deflected shot gave Liverpool the lead again, and United looked hopeless.

Ten Hag’s team refused to give up, and in the 112th minute, Rashford calmly finished a bottom corner after McTominay had set him up.

The Brazilian was clearly irked at Ten Hag’s demands he perform a defensive role deep into extra time

Even United goalkeeper Andre Onana had to intervene to get Antony into the right position

Antony takes one final glance back at the dug-out to confirm he’s being asked to play left back

The £85million forward will hope his crucial goal will revive his fortunes at Manchester United

Young winger Amad then won the tie with penalties looming, finishing off a breakaway attack after Garnacho played him in.

Amad was then sent off for a second bookable offence after removing his shirt to celebrate.

United held on to set up a Wembley semi-final against Championship side Coventry City next month and dash Liverpool’s dreams of winning a Quadruple in Jurgen Klopp’s farewell season.

Ten Hag told beIN Sports: ‘It’s very important for him. He struggled so much. First part, he was not himself, he’s responsible for that.

‘And then he lost confidence, and now he has to fight back. We see through the last two weeks, he’s returning.

‘I see in training, I see the Antony I was used to work with at Ajax, and also used to work in the first weeks here.

‘He has to fight back, and I’m sure he will do, because you’ve seen that goal.

‘But not only in the goal. When he’s going to left full-back position, he’s defending very well. In certain systems, he can play from that side.

‘He’s not a defending player, don’t get me wrong, because we have seen, he can score goals.’

After the match, Antony also expressed about joining the left-back position:

“When the coach talked about this, we found it a bit strange, but sacrificing for the team, sacrificing for teammates, that’s not a problem for me.”

After the international break, Manchester United have back-to-back games in London away to Brentford and Chelsea before another Liverpool clash at Old Trafford on April 7.