Brendan Rodgers criticised VAR after Daizen Maedas red card in Celtics 6-0 loss at Atletico Madrid hammering, saying it had made football feel like a "computer game".
Maeda was originally shown a yellow card for a challenge on Mario Hermoso but on-field referee Ivan Kruzilak was sent over to the review screen by the VAR official and he overturned his original decision.
Celtic were only 1-0 down at the time but capitulated following the forwards dismissal, shipping four goals after half-time to leave them on the wrong end of their second-biggest European defeat.
"The ref saw it in game time and didnt deem it worthy of anything so serious, but it just feels like a computer game now, football," Rodgers said after the game. "So many visits to the screen, so many influences in the game.
Atletico Madrid 6-0 Celtic - Match reportHow the teams lined up