Costa is one of the world's best, says David Luiz

The Brazil-born Spain international has enjoyed an impressive start to the Premier League season and is currently the division's top scorer with seven goals in eight games.

The striker's team-mate, David Luiz, believes that recent form puts Diego Costa among the world's best strikers.

"Diego is now one of the best strikers in the world," he told the 'Evening Standard'.

"I love the way he plays, and I am happy now because he plays in my team and it’s difficult to play against him! He never makes life easy for the defenders".

The former PSG man also says he admires Costa's fighting spirit and his someone who will never forget his roots.

"He never forgets when he was playing with small teams in difficult leagues and difficult stadiums. I like these people, they want to give everything," he added.