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Andreas Christensen, who was forced off in the first half in the game against Liverpool last weekend, has been passed fit to start today’s game.
Marcos Alonso starts today, having replaced Emerson Palmieri against Liverpool after he suffered a first half injury.
Chelsea midfielder N’Golo Kante and defender Kurt Zouma aren’t part of the squad today.
Youngsters Marc Guehi, Reece James and Callum Hudson-Odoi, who featured against Grimsby, are all on the bench.
Chelsea XI: Kepa; Azpilicueta (c), Christensen, Tomori, Alonso, Jorginho, Barkley, Willian, Mount, Pedro. Abraham.
Subs: Caballero, James, Guehi, Kovacic, Pulisic, Hudson-Odoi, Batshuayi.
Brighton XI: Ryan; Webster, Dunk (c), Burn; Montoya, Stephens, Bissouma, Alzate; Gross, Maupay, Mooy.
Subs: Button, Bong, Baluta, Jahanbakhsh, Murray, Schleotto, Connolly.
The referee is Chris Kavanagh