Beyond the merits, there were controversies. Liverpool's first goal came after a clear penalty from Alexandre-Arnold not charged that all City protest. Not enough, at 82 minutes Alexander-Arnold himself committed another penalty by rejecting with his right hand a shot of Sterling. Beyond the intentions, the arm was clearly away from the body.
Although the players of the City did not claim, only Guardiola did it, which erupted in the side against the fourth referee.