Gianfranco Zola believes Eden Hazard can fulfil his true potential at Chelsea under coach Maurizio Sarri. Zola returned to Chelsea as Sarri's assistant, 15 years after ending a glorious playing spell at Stamford Bridge, and says his fellow Italian has opened his eyes to a new world of football.

Hazard has been deployed in a more advanced position under Sarri, devoid of defensive responsibility, and has scored five goals in four EPL starts this season. Zola is convinced the Belgium playmaker can get better and better. "I don't think, in my opinion, he's reached his full potential," said Zola, speaking ahead of today's League Cup third-round tie at Liverpool.