Conte also steered Chelsea FC to the FA Cup title last season before he was sacked and replaced by Sarri at Stamford Bridge.
Sarri arrived at the Stamford Bridge in July and has hit the ground running, winning all four of their league matches prior to the worldwide break.
"Indeed, Chelsea have attempted and completed more passes than any other side in the Premier League so far this season". I think his philosophy to live life is already great because he wants to enjoy every day, he wants to be happy and he wanted to take this opportunity to start one more chapter in his life.
'We have a new coach with new tactics, new philosophy, new everything to be honest, ' Fabregas said.
"Every week he tries to make the best plan possible for the exact game and this is great because he is working in the best way for the team, for the collective", he added.
"You have to play good football for a whole year to achieve that, but I think they can do it, both Pep and Klopp".
"So it's going to be hard for them to win the Premier League".
And Sarri has confirmed Azpilicueta will lead his side once again when they play host to Neil Warnock's newly-promoted Cardiff on Saturday.
"Last time I spoke to him he told me he wants to play for another season", Sarri said.
Guardiola's defending champions Manchester City are favourites to retain their crown in 2018-19 and have looked in excellent form in the opening four matches of the campaign. To close that gap in only one season is very hard.