Leeds pair Diego Llorente and Raphinha are fit, while Pascal Struijk has completed a three-match ban.
Luke Ayling, who requires minor knee surgery, Patrick Bamford and Robin Koch all remain sidelined.
Watford midfielder Peter Etebo faces a five-month absence because of a torn thigh muscle.
Tom Cleverley has recovered from a suspected concussion last weekend and Daniel Bachmann is fit following a knee injury.
LAWRO'S PREDICTION
Watford have shown they can be awkward opponents but Leeds are too easy to beat at the moment - if it's not one part of their team that's not functioning, it's another.