The Blues have only made three high-profile additions this summer, but Sarri has been left with more than 25 players in his first-team squad.
European clubs are still able to make signings in the coming weeks, and Sarri has admitted that he is happy to trim his options at Stamford Bridge.
At a press conference, Sarri told reporters: "Now I think the squad is too large. Some players have to go on loan. I don't know who at the moment. I prefer to have 23, 24 players and three or four very young players. No more."