The game was mired in controversy, with City feeling that Arsenal’s equalizer should not have stood as the referee had not blown his whistle for Arsenal to take a free kick.
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The Gunners were later furious as Leandro Trossard collected a second yellow card for a slightly rough push on Bernardo Silva.
BBC Sport reporter Simon Stone wrote on X: "Kyle Walker making his point to Michael Oliver in the tunnel at half-time."
A fan explained the situation on X, stating: "TV replays have shown Michael Oliver called Kyle Walker over to speak after Arsenal were awarded a free-kick.
"The referee waited momentarily after the conversation, before restarting play, while Kyle Walker was not yet in position when Gabriel Martinelli was on."