Watford have revealed Isaac Success and Tom Dele-Bashiru will not be involved in their Championship game against Queens Park Rangers on Monday.
Nigeria international Success suffered a hamstring injury in June during a training session and has been struggling to overcome the problems.
The centre-forward last featured for Xisco Munoz’s men in February due to his inconsistent performances for the club.
Editors' Picks
Success has struggled to establish himself at the Vicarage Road since teaming up with the club from Spanish side Granada in 2016.