The Bees manager told Sky Sports: "I actually don't think Havertz should be on the pitch when he scored. It was a clear dive. Maybe it is difficult for the ref but the linesman should have seen it."
He added to BBC Sport: "[The players] were very angry because they felt they were hard done by with the penalty shout with Havertz. You can see the angles, it was clearly a dive. That was a second yellow and then it is 11 v 10. I think that was a crucial moment in the game. I hope they admit they got something with them there, because last time there was a lot of complaint about a VAR situation marginally going our way. Hopefully they remember that when they talk after the game."