Watford head coach Claudio Ranieri remains without Kwadwo Baah, Peter Etebo, Ben Foster, Christian Kabasele, Nicolas Nkoulou and Ismaila Sarr.
However, Francisco Sierralta is available after recovering from a hamstring injury.
West Ham are again without the key defensive trio of Aaron Cresswell, Angelo Ogbonna and Kurt Zouma.
Manager David Moyes could make changes after their loss to Southampton on Boxing Day.
MATCH FACTS
Head-to-head
- Watford have lost four of their last five Premier League games against West Ham, which is more than they had in their first nine versus the Hammers.