Eden Hazard can only settle for a place on the bench in an unchanged line-up that beat Huddersfield 3-0 in the last game
Maurizio Sarri decided to go with Ross Barkley once again in the middle of the park with new boy Kovacic on the bench.
Arsenal make two changes after the defeat by Man City; Monreal in for the injured Maitland-Niles, and Iwobi is in for Ramsey, who is on the bench.
Unai Emery and Sarri are squaring up for the first time in the London derby and fans from both sides are hoping for the best from their gaffers in what will be an exciting encounter.
CHELSEA TEAM NEWS
Team to play Arsenal: Kepa, Azpilicueta, Rudiger, Luiz, Alonso, Kante, Jorginho, Willian, Barkley, Pedro, Morata
Subs: Caballero, Hazard, Moses, Kovacic, Giroud, Zappacosta, Christensen
ARSENAL TEAM NEWS
Team to play Chelsea: Cech, Bellerin, Sokratis, Mustafi, Monreal, Xhaka, Guendouzi, Mkhitaryan, Ozil, Iwobi, Aubameyang
Subs: Leno, Elneny, Ramsey, Lacazette, Torreira, Lichtsteiner, Welbeck