ALAN Dunne is available for selection again after serving a one-match ban.
The Millwall captain missed last weekend's 1-0 win over Cardiff through suspension but could make an immediate return to the back four at Vicarage Road.
Scott Malone (thigh) and Matthew Briggs (calf) are both injury doubts, meaning Mark Beevers could slot in at left back.
Magaye Gueye and Angel Martinez could be included on the bench after proving their fitness in training.
Nicky Bailey (calf) and Carlos Edwards (knee) remain sidelined with injury.
Watford expect to be without Heurelho Gomes (groin), Almen Abdi (shoulder) and Gabriele Angella (ankle), but striker Troy Deeney could make his first start after injury.