Hazard said at the World Cup in Russian Federation that "it might be time to discover something different " after spending the last six years with Chelsea.
Sarri, speaking at a news conference on Wednesday, described Hazard as "one of the top two or three European players".
"I think he's our best player", Fabregas said of his teammate after reaching Perth ahead of Monday's friendly against Perth Glory. "I hope that I will manage to improve him".
"We started only four days ago".
"I can not change 20 players, I must adapt and then I will see if we change something in my game.
I want to meet them face-to-face and understand what's the best thing to do for everyone".
Chelsea captain Gary Cahill is considering quitting Stamford Bridge as the club close in on a £44.2m deal for Juventus defender Daniele Rugani.
"I won't change my head about it. It is not a typically English squad and this has given me confidence".
"I don't want to make this distinction, I am not bothered about nationality". "I've been playing for 15 years, and when you have a new manager you need to show that you want to play".
"I know this will be an extremely hard challenge for me".
Chelsea's new manager also apologised for insulting comments to a female journalist in March.
"It will take some time to build a slightly different way of playing. The press enjoys creating rumours, but everyone knows how much I care about PSG". Homophobic, sexist, racist. Absolutely not.