Chelsea boss Maurizio Sarri does not believe his side have fully adapted to his philosophy.
Sarri is a big change for Chelsea after Antonio Conte, who preferred the team to play on the counter attack.
In contrast, Sarri wants his team to dominate with the ball. But he believes they still have some way to go after a 0-0 draw with West Ham.
"We need to move the ball quicker," he said to Chelsea's official website after the game.
"We need more movement without the ball.
"We are improving in the defensive phase in the last two or three matches, but we have to improve in the offensive phase, especially in this kind of match."