Arsenal were left furious after Leandro Trossard was shown a controversial red card in their showdown with Manchester City.
Trossard was sent off by referee Michael Oliver when he was given a second yellow card for kicking the ball away after the whistle had gone in first-half stoppage time at the Etihad.
The Belgium was already on a booking for a foul earlier in the half.
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Mikel Arteta was incensed and complained to the fourth official and Arsenal players were unhappy with official Oliver.
Confirming why Trossard was sent off, the Premier League Match Centre tweeted: “The referee issued a second yellow card to Leandro Trossard for delaying the restart.”
Sky Sports commentator Gary Neville described the red card as “stupidity” from Trossard.
Neville said: “They aren’t learning. I’m not sure they can complain. He has not got a leg to stand on Trossard.
“It’s a foul, he barges Bernardo Silva out the way and then goes and wellies the ball away. The whistle goes. He knows he’s heard the whistle because he half pulls out of kicking it away. He doesn’t put his foot fully through it.
“They [Arteta and Arsenal’s coaching staff] are giving him a hug. They might not see it the same at the end of the game, they might look on it as stupidity. I think they will be disappointed with him when they reflect upon it.”