Chelsea boss Roberto Di Matteo admits he faces a test to find the right balance in midfield after their rash of summer signings.

Oscar becomes the fourth young attacking midfielder to have joined the club this summer, following Kevin De Bruyne, Eden and Thorgan Hazard and Marko Marin, and Di Matteo admits it will be a challenge to bring balance to the line-up, though the signing can only help our push for honours.

"It will be a challenge to make sure we have the right balance within the team so we will have to see how we fit the team together with all the players.

"The club has always been competitive, looking to improve, get better and fight at the top end of the league so it will only give us a better chance in the Premier League."