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Tammy Abraham will miss Chelsea's Premier League clash with West Ham at Stamford Bridge with a hip problem.
The England striker fell heavily on his hip in Wednesday's 2-2 Champions League draw at Valencia and was carried from the Mestalla Stadium field on a stretcher.
Michy Batshuayi and Olivier Giroud will battle it out to start up front against West Ham, while Antonio Rudiger is still working back to fitness after a pelvic problem.
West Ham will be without Issa Diop through suspension so Declan Rice could drop back to central defence.
Goalkeeper Lukasz Fabianski is still injured so boss Manuel Pellegrini must decide whether to stick with error-prone back-up Roberto or give third-choice David Martin a chance.
Manuel Lanzini, Jack Wilshere and Winston Reid are still sidelined.
Chelsea Provisional squad: Arrizabalaga, Zouma, Emerson, James, Tomori, Kovacic, Willian, Kante, Pulisic, Mount, Batshuayi, Caballero, Christensen, Azpilicueta, Gilmour, Jorginho, Pedro, Giroud, Cumming.
West Ham Provisional squad: Martin, Zabaleta, Ogbonna, Rice, Cresswell, Sanchez, Noble, Snodgrass, Antonio, Yarmolenko, Haller, Roberto, Masuaku, Balbuena, Fredericks, Fornals, Anderson, Ajeti.
