Watford head coach Walter Mazzarri says he could be without up to nine first-team players for Saturday's visit of Tottenham.
Valon Behrami, Daryl Janmaat, Adrian Mariappa, Roberto Pereyra, Isaac Success, Ben Watson and Miguel Britos are definitely out, while Stefano Okaka and Craig Cathcart are doubts.
Tottenham defenders Jan Vertonghen and Kyle Walker are both suspended.
Toby Alderweireld returns after a virus, but Eric Lamela remains out.
MOTD COMMENTATOR'S NOTES
Steve Wilson: "Tottenham bring up the halfway point of their season at Vicarage Road, just as they did last year, when they won 2-1 thanks to Son Heung-min's late goal.