Watford skipper Troy Deeney is a doubt for the home game against Wolves.
The nine-goal striker is struggling with a dead leg and will need a fitness check before kick-off.
The Hornets also have problems in defence with Gabriele Angella suspended and Joel Ekstrand (back) and Gabriel Tamas (cruciate) out injured.
But midfielder Gianni Munari will be fit after shaking off a minor hamstring problem.
Wolves head coach Kenny Jackett expects to pick from an unchanged squad for their trip to Vicarage Road.