On loan to Hereford United striker Moses Ashikodi is currently back at Watford's London Colney training ground, receiving treatment on a foot injury sustained in the recent friendly against Shrewsbury Town.
The 21-year-old has so far played four games for Hereford, finding the back of the net once.
Ashikodi, who was on crutches following the game, could be out for at least a month.
Graham Turner has two other players currently out with long-term injuries - Robbie Threlfall and Sam Oji.