Frank Lampard will weigh-up whether to shake up his back four against Watford after Chelsea's defensive horror show against West Ham on Tuesday night.
Marcos Alonso is under the spotlight after he failed to track Andriy Yarmolenko for his later winner as Chelsea missed the chance to leapfrog Leicester into third. Lampard’s other left-back option is Emerson Palmieri, who has this week been linked with a move to Inter Milan.
Centre-backs Antonio Rudiger and Andreas Christensen also struggled against Michail Antonio in the West Ham defeat and Kurt Zouma could come in. Fikayo Tomori is still out injured.
Lampard started Tammy Abraham ahead of Olivier Giroud at the London Stadium but Abraham failed to justify that decision and Giroud could come back in to lead the line.
Mateo Kovacic has been ruled out with an Achilles injury.
Kepa had a difficult night against West Ham but is set to retain his place in goal ahead of Willy Caballero.
Chelsea predicted XI (4-3-3): Kepa; Azpilicueta, Zouma, Rudiger, Alonso; Barkley, Kante, Mount; Willian, Giroud, Pulisic
