Assistant coach Gianfranco Zola claims Eden Hazard is benefiting from Chelsea's system under Maurizio Sarri but the best is still to come from the Belgian international.

Zola believes the forward is getting more opportunities in dangerous areas in Sarri's 4-3-3 formation, which has seen Chelsea win every one of their top-flight games so far this season.

"Eden is a fantastic player and is getting to have more maturity when he plays so the results are mainly due to his qualities," Zola told Chelsea TV.

"Of course he's the type of player that it can benefit him a lot because you have a lot of the ball, close the opposition's goal and in these conditions Eden can take a big advantage.

"I think he's still not at his best. The more he plays in and understands the system, he's going to be even more effective."