"I think in one week he will be ready to play". But if he wants to help us I am very, very happy.
The Blues have won all four of their opening games in the league so far this season under the newly appointed Sarri and are only behind Liverpool on goal difference in the standings. "At the moment it's not easy to give space to everyone, I have 28 players".
"So, I believe in this philosophy, and then after that he is a great coach".
"I am very open with him, because he's the history of the club".
But the timing of the fixture makes a damaging setback more likely according to Sarri, who said that he encountered a similar problem during his time in charge of Napoli.
"First of all, he is a great person, great as a human being".
While the Blues have managed to adopt Sarri's offensive tactics very well, with the club now having made the most passes of all Premier League sides with 2,995 and a passing accuracy of 89% (equal to Manchester City), the Italian feels that there is still room for improvement, particularly on the defensive phase of their game - something he had earlier mentioned needs a complete change of the mind.
Fabregas is likely to only be fit for a place on the bench, though, and could replace Ruben Loftus-Cheek, who picked up an injury on worldwide duty with England. "He's training with the team during the week, so now he has only to improve his physical condition".
The Spaniard will be rested following his global retirement, and appears one of the most likely City players to start in Kevin De Bruyne's absence. At the moment Fabregas is able to be on the bench.
Sarri has decided on his permanent captain, but will tell his players his decision first, with Cesar Azpilicueta, Gary Cahill, Eden Hazard and David Luiz all potential skippers.