"If he wants to help us, I'm very, very happy", Sarri said. I don't want to go there and not have a shot on target, but we've got to have players at their best abilities to give them a game'. I hope not. It's very hard. "We need another step to be at the same level", said the Blues head coach.
Asked whether the title is unrealistic, Sarri added: "I think so".
"Chelsea is his home, of course. I spoke to Eddie Newton (Chelsea's loan player technical coach) about it, but he ended up at Aston Villa", he told the Evening Standard.
"It is very hard to recover 30 points in one season, very hard. If he wants to play for another season, I think it's right he tries to play".
"My feeling is that now we are not a very solid team in the defensive phase".
Ruben Loftus-Cheek is a doubt for the game with an injury, while Emerson and Davide Zappacosta are also unlikely to feature.
Sarri is known as a heavy smoker and said during the global break his father was trying to persuade him to quit.
The 59-year-old's preferred playing style, which sees his team play short, snappy passes, certainly suits the Brazilian. "I am trying", Sarri said. At the moment Fabregas is able to be on the bench.
The Italian's father has been urging him to give up cigarettes for 20 years but it's proving hard.
Speaking to Chelsea's official website, the 30-year-old has admitted that he's always been one to plan ahead and says he'd love to spend another five years in London.
Marked his first start for the Toffees last time out with an assist, and is likely to start again this weekend.