Maurizio Sarri says that Danny Drinkwater has been excluded from the team beacuse his "not adaptable" and does not suit the manager's philosophies.
Drinkwater has yet to play under the Italian boss, who took charge of Chelsea for the 2018-19 season following the departure of Antonio Conte.
The midfielder featured 22 times last season after joining from Leicester for a fee of £35 million ($46m) in September 2017.
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Drinkwater was recently charged with drink-driving and been given a date for a court appearance after allegedly crashing into another vehicle after leaving a party early on Monday morning.