Chelsea will play in a 3-5-2 formation as Alvaro Morata returns to the starting lineup.
See the team sheet below:
Chelsea starting XI: Courtois; Azpilicueta, Cahill (c), Rudiger; Moses, Kante, Fabregas, Bakayoko, Alonso; Hazard, Morata.
Subs: Caballero, Zappacosta, Ampadu, Drinkwater, Willian, Pedro, Batshuayi.
Brighton starting XI: Ryan; Schelotto, Duffy, Dunk (c), Suttner; Izquierdo, Stephens, Propper, March; Kayal; Hemed.
Subs: Krul, Bruno, Baldock, Knockaert, Gross, Goldson. Murray.