Because it wasn't. No pull, no foul. He let go before the ball came in. Nowhere near enough for a foul.
It was a flap from Donnarumma and he tried to claim a ridiculous foul to cover up his error. Glad to say it failed. Just bad keeping.
I agree he flapped but the player had hold of his arm whilst the ball was in flight. I don’t see how if you hold the keepers arm whilst the ball is in play, which affects his ability to move freely, isn’t a foul. Not that I care so much, just think it was a foul.
For me, it had no impact on Donnarumma because he had a free effort to go for the ball and just flapped at it. It would have been very soft for me and certainly not enough for VAR to intervene.
Fair dos to Sunderland once again. People rightly say that signing Xhaka was a masterstroke, but how the hell they managed to land Mukiele for £9.5m plus add ons I will never, ever know. He's some player.