Arsenal were expected to be contenders to take City's crown after finishing second in each of the past two seasons.

The Gunners had failed to win in their previous four league games to start the weekend nine points adrift of leaders Liverpool, who travel to bottom-of-the-table Southampton on Sunday.

Martin Odegaard's return from injury is a major boost to Arsenal's hopes of a first title in over 20 years and his pass teed up Bukayo Saka to blast home the opener on 15 minutes.

Saka turned provider for another special strike, this time by Thomas Partey, to double the home side's advantage early in the second period.

Ethan Nwaneri then came off the bench to score his first Premier League goal as the highly-rated 17-year-old slotted in Raheem Sterling's cross.