Manchester City captain Kyle Walker was left frustrated by referee Michael Oliver's part in Arsenal's first goal during the 2-2 draw at the Etihad Stadium.
The England right-back was caught out of position after being called for a chat by Oliver, with Riccardo Calafiori taking advantage by curling in an equaliser to cancel out Erling Haaland's opener.
Gabriel headed the Gunners into a 2-1 lead and, after Leandro Trossard was sent off on the stroke of half-time, the visitors were made to pay at the death as John Stones equalised.