Ahead of Saturday evening's showdown, Sports Mole predicts how the Italian will set out his side at Stamford Bridge.
Hazard impressed during his 14-minute cameo from the bench against Huddersfield, but Sarri revealed after the match that the Belgian forward is still not ready for a full outing.
Given the solid showings from Pedro and Willian on the flanks, plus the fact that Hazard has had so little time to adapt to Sarri's methods, the ex-Lille ace may well have to settle for a place on the bench once again.
Kovacic has only had a week to adjust to life at his new club, but reports suggest that the Real Madrid loanee will go straight into the starting lineup to face Arsenal, likely in place of Ross Barkley.
Barkley was used heavily in pre-season and retained his place in the side against Man City and Huddersfield, yet it seems unlikely that he will feature quite so much now that Sarri has strengthened in the middle of the park.
The back five, including new goalkeeper Kepa Arrizabalaga, should remain unchanged after the clean sheet at Huddersfield, while elsewhere Cesc Fabregas is carrying a knock that could rule him out against his former club.