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Chelsea boss Frank Lampard makes one change to the team that started the win at Norwich a week ago with Fikayo Tomori coming in for Andreas Christensen.
It’s Tomori’s first start ever for Chelsea in a competitive game. The 21-year-old defender knows today’s opponents well of course, having played them twice in the Championship last season when on loan at Derby.
Eighteen-year-old Academy midfielder Billy Gilmour is on the bench.
Chelsea: Kepa; Azpilicueta (c), Zouma, Tomori, Emerson; Jorginho, Kovacic; Pulisic, Barkley, Mount; Abraham.
Chelsea subs: Caballero, Christensen, Alonso, Gilmour, Willian, Batshuayi, Giroud.
Sheffield United: Henderson; Bashan, Egan, O’Connell; Baldock, Lundstram, Norwood (c), Freeman, Stevens; McBurnie, Robinson.
Sheff Utd subs: Moore, Mousset, Stearman, Osborn, Besic, McGoldrick, Sharp.