Chelsea will be without Gary Cahill and Cesc Fabregas against Albion at the Amex tomorrow.
The England central defender and Spanish midfielder are still injured and join the suspended Alvaro Morata and Pedro as absentees.
Manager Antonio Conte, speaking about Cahill and Fabregas at his pre-match press conference, confirmed: “They are out. I need to check on a couple of other situations.”
New signing Ross Barkley from Everton is in the squad and could make his debut as a substitute after two goals in a friendly yesterday.
Conte said: “I think Ross is in a good physical condition. Yesterday he played 70 minutes. Tomorrow he is in the squad and comes with us.
“I don’t know if during the game I decide to give him the chance to play or wait, or if the game doesn’t ask this type of situation. He has to work with us in our idea. Now he is in the squad.”
The players will wear black armbands and there will be a minute of applause before kick-off in memory of Cyrille Regis, who died earlier this week.