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As Haaland raised a boot to play the ball past Henderson, he reached out a glove and batted the ball away.
Dean Henderson uses his hand outside the area to knock the ball away from Erling Haaland. Jan Kruger - The FA/The FA via Getty Images
VAR review: A handball offense is judged by the position of the ball when it's touched by the hand, so even though Henderson was stood inside the area, he touched the ball when it was outside.
The assistant didn't spot that the ball was outside the area, so there was no free kick given -- and the VAR cannot intervene just on this basis alone.
A goalkeeper handling outside the area isn't in itself a sanctionable offense.
You don't get sent off for handball, but for the effect.
In VAR terms, Gillett can only get involved if he thinks there should be a red card for denying an obvious goal-scoring opportunity (DOGSO).
It was decided that as the ball was going away from goal, there was only the possibility of a scoring chance rather than it being obvious.
Verdict: There have been only two VAR red cards for DOGSO this season -- for Arsenal's William Saliba (Gillett was the VAR) and Myles Lewis-Skelly -- and this surely should have been a third.
The only reason the ball was going away from goal was because Henderson had illegally pushed it that way.
Without Henderson's handball, Haaland would have been able to knock the ball past him, and the actions of the goalkeeper have to tick the boxes for DOGSO.
The only possible doubt is whether Haaland's touch would definitely have taken the ball past the goalkeeper.
Bernardo Silva is fouled by Tyrick Mitchell. Shaun Botterill/Getty Images
VAR review: Replays showed that Mitchell got a touch on the ball, so why was this penalty allowed to stand?
A touch on the ball isn't in itself an automatic reason to cancel a penalty, the tackle can be of sufficient nature to support the on-field decision.
The foul can come before the touch, the touch can be insignificant, or the tackle could be forceful enough for a spot kick to be a supportable decision.
Verdict: On Friday evening, Chelsea had a penalty overturned on a VAR review because Manchester United goalkeeper André Onana touched the ball.
The difference with the Onana overturn was he got an obvious touch on the ball and he had played it.
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