Howard Webb speaks out on why Liverpool were WRONG to dispute Virgil van Dijk's controversial 'duck' goal as refs chief rejects Arne Slot's claim about similar decision last season

Referees' chief Howard Webb has launched a staunch defence of the decision to disallow Virgil van Dijk's goal against Manchester City on Sunday. 

The Dutchman thought he had levelled the score for Arne Slot's men after nodding beyond Gianluigi Donnarumma in the 38th minute, but the goal was controversially chalked off.

A VAR review ultimately ruled that Andy Robertson - who ducked out of the way of van Dijk's effort - was offside and had interfered with City goalkeeper, keeping Pep Guardiola's men in the lead of the tie which they went on to win 3-0.

In disagreement with the decision, which Slot labelled a 'clear and obvious error' on the night, Liverpool then contacted PGMOL, the refereeing body led by former man in the middle Webb, looking for answers.

But Webb has tonight backed the call - saying it was 'not unreasonable' for the goal to be disallowed.

Speaking on the Match Officials Mic'd Up show, he said: 'Interfering with an opponent where the offside position player doesn't play the ball and the officials have to make a judgment whether the actions of that player impact an opponent, are some of the most subjective decisions that we have to make.

'Therefore, it's no surprise that some people believe this goal should have stood, so I think it's important that we look at the facts of what actually happened in this situation.

'We know the corner comes in and the ball reaches Van Dijk. As the ball's coming across the penalty area, the Manchester City players move out, they leave Robertson in that offside position in the heart of the six-yard box.

'When Van Dijk heads the ball forward, that's the moment when we have to make an offside judgment about Robertson and about what he's doing there.

'We know he doesn't touch the ball but what does he do? Well, as the ball moves towards him, three yards out from goal, right in the middle of the six-yard box, he makes that clear action to duck below the ball.

'The ball goes just over his head, and the ball finds the goal in the half of the six-yard box where he is. Then, the officials have to make a judgment - did that clear action impact on Donnarumma, the goalkeeper, and his ability to save the ball? And that's where the subjectivity comes into play.

'Obviously that's the conclusion they drew on that. They looked at that position, they looked at that action, so close to the goalkeeper, and they formed that opinion.'

Footage from the show, which is hosted by Michael Owen, provides a peek behind the curtain of the VAR room during the moment the call was made.

As van Dijk scores, the AR2 (Second Assistant Referee) can be heard exclaiming: 'Robertson, Robertson, Robertson. Robertson's in line of vision, right in front of the keeper. He's ducked under the ball. He's very, very close to him.

'I think he's line of vision. I think he's been impacted, mate.'

Referee Chris Kavanagh then responds: 'Ok, so offside then?' to which the AR2 says: 'I think offside.'

The VAR team led by Michael Oliver are then brought in - and they rule that Robertson is in an offside position before they consider if he has blocked Donnarumma's vision.

Speaking to the referee, Oliver says: 'Confirming the on-field decision off offside against Andy Robertson. He is in an offside position, very close to the goalkeeper, and makes an obvious movement directly in front of him. Check complete. Offside.  

Webb said while he understands his opinion to support the decision is 'not a view held by everybody' he argues that 'it's not unreasonable to understand why they would form that conclusion'.

He continued: 'The player is so close to the goalkeeper, the ball's coming right towards him and he has to duck to get out of the way of the ball - and they form the conclusion that that impacts Donnarumma's ability just to dive towards the ball and make that save.

'And then, of course, once they've made that on-field decision, the job of the VAR is to look at that and decide, was the outcome of offside clearly and obviously wrong?

'Only Donnarumma truly knows if he was impacted by this and, of course, we have to look at the factual evidence, and when we see that factual evidence of that position of the player ducking below the ball, so close to the goalkeeper, the VAR determines that the outcome of offside is not clearly and obviously wrong, and they stay out of it.'

The Reds contacted PGMOL as they did not accept that Donnarumma was impeded by the presence of Robertson and the Scotland captain was not in the goalkeeper's line of vision. The club spent time reviewing footage from multiple angles.

Speaking after the 3-0 defeat, Slot said a 'clear and obvious error' had denied his side pulling level in the first half, though the Dutchman was reluctant to blame that decision for the defeat.

The Liverpool boss said: 'He didn't interfere at all with what the goalkeeper could do.

'Immediately after the game someone showed me the goal that the same referee allowed – City against Wolves last season (when Bernardo Silva was on the line for a John Stones header).

'So it took the linesman 13 seconds to raise his flag to say it was offside. So there was clearly communication, but as I said that (goal) could have influenced the game in a positive way for us.

'I would like to emphasise the fact that being 2-0 down at half-time was a fair reflection of how the game went.

'This can happen in football. For me it was a wrong decision that this goal was not allowed, but I will not say because of that we lost the game.

'After 1-1, if City kept on playing like they did then we would have struggled as well.'