"We have to make decisions, which I do with the owner in terms of what we can do and what we can't do".
The Blues head into the game looking to continue their fine start to the season, after winning four from four.
While talking to the press ahead of the Cardiff game, Sarri said: "At the moment, I can only see City or Liverpool [winning it], at the moment", he told a media conference. "It's up to him, I am very open with him because of his history with the club".
Terry said his goodbyes to Chelsea last summer, calling time on a phenomenal career at Stamford Bridge, during which he established himself among the greatest players ever to pull on the shirt.
'I think Man City will win the Premier League this season, with Liverpool just behind. My feeling is that now we are not a very solid team in the defensive phase.
The Belgian looked back to his best for Belgium over the worldwide break and should be eager to drive his team forward when Cardiff arrive at Stamford Bridge on Saturday afternoon.
"We need another step I think to be at the same level".
Chelsea's flawless start to the season has led to suggestions they can challenge for the title after placing fifth last term, well adrift of champions Manchester City.
"Yesterday [Thursday] there were problems with fever for Emerson [Palmieri] and [Davide] Zappacosta, and a little problem after the match with the national team for Loftus-Cheek".
"Mentally the match after the (international) break it is very hard; materially because we will play against a very physical team", he said.
Kante said: "It's a new system with a new manager, new players and I enjoy being in this position to try and sometimes be in the box and then to be back defending, but I'm enjoying this new position".