Check out Bukayo Saka goal that was disallowed by VAR.
5 mins: Arsenal have a goal disallowed! The ball is played through to Nketiah, who backheels it to Saka, who smashes in at the near post.
When the pass is played both Nketiah and Saka are onside but as it skidded through it clipped Saka’s heel, and at that point Nketiah was offside.

Problem is Mr flag man