>Fikayo Tomori comes in for Andreas Christensen to make his second Chelsea appearance.
>Frank Lampard has explained his decision to make the change is due to competition for places and with Tomori training really well, he deserves his chance.
>With Pedro unavailable due to the hamstring strain he suffered in the warm-up last weekend, Mason Mount is expected to continue in a wider role with Ross Barkley more central. Tammy Abraham, the other goalscorer at Norwich continues up front.
Teams:
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.