The Belgian ace has now scored five goals and registered two assists in three starts.
Sarri believes Hazard can score as many as 40 goals - even though his best Premier League tally is 16, set in the 2016-17 season - and that he should be gunning for the Premier League Golden Boot award.
That has led to some talk of whether he could emulate Mo Salah's stunning effort from last season and catapult himself into the top echelon of players in the world, alongside Cristiano Ronaldo and Lionel Messi. "I think we need to improve".
"When Alvaro (Morata) was playing it's completely different, he's a different player than Olivier, but they both have great qualities, so I'm happy to have good strikers in the team". "I did not want to lose and I was gutted when he scored the three goals against us at Stamford Bridge! But I also think he can still improve more".
Chelsea have won all 5 of their opening Premier League fixtures, the latest being their 4-1 win at Stamford Bridge against Cardiff City. "If you have seen the match today, you will say yes".
Elite goalscorers shoot a lot more frequently than everyone else and volume, rather than efficiency, has been the limiting factor on Hazard's goal tally so far at Chelsea.
Former Chelsea star Tony Cascarino says winger Eden Hazard has proven that he is "the most gifted" player to have ever played for the Blues.
Fairly impressed with the 31-year-old center-half, Sarri said, "David has a big future here - he will be very useful for us". "He wants to play with the ball, he wants to play with intensity, to work on the details and to give us all the information he can about the next game and the opponent".
"I covered Spanish football for four years and I saw Ronaldo and Messi, and the way they did it".
"He can score 30 or 35 goals".