Referee Stuart Atwell decided not to give a penalty against Callum Hudson-Odoi, despite the ball striking his hand in the penalty area against Manchester United.
Early in Chelsea's Premier League clash with United on Sunday, the VAR official advised the referee to look at the pitch-side monitor to check for a possible handball.
The ball clearly did strike Hudson-Odoi's hand while he was under pressure from Mason Greenwood, however the spot kick was not awarded.
It left the Manchester United players fuming, and Sky Sports commentator Gary Neville said: 'There's no doubt two or three months ago, that's a penalty.