West Ham manager David Moyes will provide a fitness update on his squad later on Friday.
Danny Ings, Gianluca Scamacca and Thilo Kehrer have all been nursing recent injuries, while Kurt Zouma, Maxwel Cornet and Alphonse Areola remain out.
Joao Felix is available for Chelsea after completing a three-match ban.
Midfielders Mateo Kovacic and Denis Zakaria could be involved this weekend after recovering from respective calf and thigh injuries.
CHRIS SUTTON'S PREDICTION
Chelsea have kept clean sheets in their past three games but they also don't score many - they have only found the net once in that time.