Richarlison (groin) has been passed fit for Watford, although Kiko Femenia has been ruled out with a hamstring injury.
Roberto Pereyra (calf) missed two days of training this week but should be fit for the weekend. Tom Cleverley and Marvin Zeegelaar are suspended.
Huddersfield Town have no new injury problems. Philip Billing (ankle), Jon Stankovic (knee) and Michael Hefele (Achilles) are likely to be unavailable.
Watford are unbeaten in their last seven Premier League matches against newly-promoted sides at Vicarage Road (W3 D4).
Huddersfield Town have lost five of their last six Premier League matches (W1).
Richarlison has been directly involved in nine PL goals this season (5 goals, 4 assists), four more than any other Watford player.
Tom Ince has attempted more shots without scoring this season (40) than any other PL player.
Marco Silva: "We will take the risk to win every game, this is our idea, our philosophy. We cannot win every match but we try."
David Wagner: "We are focused on ourselves - we are aware that our away record isn't the best so it's time to change something."
Referee: Michael Oliver
Assistants: Simon Bennett, Daniel Cook
Fourth official: Paul Tierney