Havard Nordtveit is West Ham's latest injury absentee ahead of the visit of Middlesbrough.
The versatile midfielder underwent a small medical procedure on Wednesday and will be out for a week.
Left-backs Aaron Cresswell and Arthur Masuaku and forwards Andy Carroll, Andre Ayew and Diafra Sakho remain on the sidelines.
Provisional squad: Adrian, Randolph, Arbeloa, Byram, Reid, Collins, Ogbonna, Oxford, Kouyate, Obiang, Fernandes, Noble, Payet, Lanzini, Antonio, Feghouli, Tore, Zaza, Fletcher, Calleri.
Source: PA-WIRE
