Does he attempt to play the ball? No.
Does he obstruct Donnarumma's line of vision? No.
Does he make any action that has an impact on Donnarumma's ability to get to the ball? No.
This is an insane VAR mistake.
🖥️💥 Spectacular VAR blunder in the Manchester City - Liverpool.
👉🏻 Robertson ducks to let the ball go by, having no impact on Donnarumma, who was already diving.
❌ 𝗜𝗧’𝗦 𝗔 𝗟𝗘𝗚𝗔𝗟 𝗚𝗢𝗔𝗟.
▪️ The assistant disallowed the goal, and VAR backed the mistake.