Manchester City boss Manuel Pellegrini accepts his team's defence needs to improve following a 3-1 defeat to Arsenal in their final pre-season game. "We had problems defending and we will try to improve this week," said the Chilean following City's defeat in Helsinki, Finland.

"If we buy someone, then OK. But, otherwise, we have a good squad. But, yes, we have conceded many goals, we will have to find ways to change this.

"You are always concerned when you are 3-0 down but we lost in pre-season.

"We did not lose three points and that is important. We will be at our best for the Premier League."