The Belgian was among the subs as the Blues ran out 3-0 winners over Huddersfield Town on the opening day, but grabbed an assist after coming on late in the game.
Nonetheless, Sarri has opted to stick with Ross Barkley in the centre of the park as the West Londoners remain unchanged from their last outing.
Mateo Kovacic did not feature against the Terriers after joining from Real Madrid on transfer deadline day and he also has to make do with a spot on the bench.
As for the visitors, boss Unai Emery has made two changes from the 2-0 loss to Manchester City last time out.
Chelsea: Kepa; Azpilicueta, Rudiger, Luiz, Alonso; Jorginho, Kante, Barkley; Willian, Pedro, Morata
Subs: Caballero, Christensen, Zappacosta, Moses, Hazard, Kovacic, Giroud
Arsenal: Cech; Bellerin, Sokratis, Mustafi, Monreal; Guendouzi, Xhaka; Iwobi, Ozil, Mkhitaryan; Aubameyang
Subs: Leno, Lichtsteiner, Elneny, Torreira, Ramsey, Welbeck, Lacazette
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