The Brazilian comes into the defence in place of Kurt Zouma as one of three changes from the last Premier League outing against Liverpool.
There is a place for Tammy Abraham in attack after his productive showing in the cup match against Barnsley in midweek. He starts along with Timo Werner and Kai Havertz.
Willy Caballero is in goal.
Branislav Ivanovic, recently signed for West Brom, is not involved today against the side he represented so magnificently.
Chelsea: Caballero; James, Christensen, Silva (c), Alonso; Kante, Kovacic; Mount, Havertz, Werner; Abraham.
Subs: Kepa, Tomori, Azpilicueta, Jorginho, Barkley, Hudson-Odoi, Giroud.
West Brom: Johnstone; Ajayi, Bartley, O’Shea; Furlong, Livermore (c), Sawyers, Diangana, Townsend; Pereira, Robinson.
Subs: Button, Kipre, Phillips, Harper, Edwards, Field, Robson-Kanu.
The referee is Jon Moss