West Ham manager Manuel Pellegrini is hopeful Marko Arnautovic will be fit to face Chelsea.
Arnautovic was substituted in the second half of West Ham’s 3-1 victory at Everton last weekend with a knee problem.
Javier Hernandez (flu) is a doubt, while Jack Wilshere (ankle) is sidelined after surgery. Andy Carroll, Manuel Lanzini and Winston Reid remain long-term absentees.
Provisional squad: Fabianski, Adrian, Fredericks, Zabaleta, Ogbonna, Diop, Balbuena, Rice, Cresswell, Masuaku, Obiang, Noble, Sanchez, Antonio, Yarmolenko, Snodgrass, Arnautovic, Perez, Anderson.
Pedro is a major doubt for Chelsea.
The Spain winger sustained a shoulder injury in Thursday night’s Europa League win at PAOK – a trip Eden Hazard and David Luiz missed.
The rested pair are expected to return against the Hammers, while Mateo Kovacic has a minor injury and may miss out again.
Provisional squad: Kepa, Caballero, Rudiger, Alonso, Fabregas, Jorginho, Kante, Barkley, Hazard, Pedro, Loftus-Cheek, Moses, Giroud, Zappacosta, Willian, Cahill, Christensen, Azpilicueta, Morata, Luiz, Emerson Palmieri, Ampadu, Hudson-Odoi, Bulka.