Sarri should figure out how to cover the centrebacks more effectively and find Kante a more fitting role. Right now he's trying to replicate his Napoli team and its Hamsik-Jorginho-Allan midfield but he might have to realize that at Chelsea there are different players available. I think would be more wise to play Kante as a LCM, covering Hazard, Luiz, Jorginho and Alonso/Emerson rather than as a RCM where he is currently being wasted. Other thing about our current system is that the right side is completely unable to create anything as Willian, Kante and Azpilicueta offer very little if anything going forward. Switching Kante's position could make the team more balanced both defensively and offensively.
For the next league games:
---------Hazard------------------Giroud-----------------------Pedro------------
---------------------------------------------------Barkley/Kovacic----------------
--------------------Kante-------------------------------------------------------------
-------------------------------------Jorginho-----------------------------------------
-----Emerson/Alonso-------------------------------------------Azpilicueta-----
-----------------------Luiz---------------------------Rudiger------------------------