Former Manchester City and Manchester United midfielder Owen Hargreaves has warned Chelsea about this Premier League team this season.

“It was a brilliant first-half performance,” Hargreaves said on Premier League Productions. “We had to wait a little bit with the delay but Arsenal were fabulous in that first 45 minutes.

“All the new signings impressed and Gabriel Martinelli stole the show for me. Arsenal look like they’re going to be a problem this season.

“The first goal was just individual brilliance from Martinelli. We know Nketiah is a good finisher but that goal was all about Martinelli.”