But Sarri, a 59-year-old heavy-smoking former banker, has revitalised Fabregas.
"I wish he came a bit earlier to be honest".
"He's very easy, it didn't need strategies from me". But the young midfielder has remained on the fringes of first-team action at Chelsea.
Fabregas' Chelsea contract expires at the end of this season, and he hopes to stay at Stamford Bridge.
The Spaniard made only his third start of the season following a knee injury in the Europa League win over Hungarian side Vidi. This is what I like. "I've said it a few times, and I'll say it again, I really think the most important thing, the most important job, of football is entertaining the people".
"I'm learning it, I'm very passionate about it as it's very interesting".
"I'm really looking forward to working for a long time with him".
The Italian said: "I am surprised".
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Messi's arrival brought added impetus from the home side and once again he went close, hitting the post 13 minutes from time . They stumbled to a 1-1 draw against Athletic Bilbao at the Camp Nou.
"I've been very happy for the last four years and a half".
A perfectly reasonable response one would feel, Willian did add that he is playing with "pleasure", and enjoys the fact that Chelsea are now playing "proper football".
"I know that he suffers as he cares a lot".
Davide Zappacosta, Gary Cahill, Andreas Christensen, Emerson Palmeiri, Cesc Fabregas and Ruben Loftus-Cheek are expected to drop out while Alvaro Morata could also make way despite scoring the victor against Vidi.
Sarri who joined Chelsea this summer, has been impressed with the Belgium worldwide.
"I'm in a good mood at the moment". At the moment for him it's very important to have a lot of training. "He was unlucky in the last three weeks, after the national team (break). I think now it's better for him to stay to work".
Maybe for you it's people who score more goals, another one is not thinking about that.
Mark Hughes feels Eden Hazard will have to wait until he has grey hair to be considered Chelsea's greatest ever player. I think I have a good understanding with the fans and players.