Manchester City midfielder Bernardo Silva was photographed making a hand gesture taunting Arsenal's lack of trophies under Mikel Arteta, during an explosive draw at the Etihad on Sunday.
Pep Guardiola's side needed a 98th-minute equaliser from substitute John Stones to salvage a point against their title rivals in a match that is being hailed as a Premier League classic.
The hosts took the lead inside the first 10 minutes through Erling Haaland's 10th Premier League goal of the season, before Arsenal came from behind to lead after goals from defenders Riccardo Calafiori and Gabriel.