Bournemouth midfielder Lewis Cook played in the Hampshire Senior Cup on Tuesday after three months out with an ankle injury and could be involved against Watford.
Captain Simon Francis must complete a three-match ban, while Marc Wilson remains out with a hamstring problem.
Watford goalkeeper Heurelho Gomes will have a back injury assessed.
Defender Daryl Janmaat may be involved after a groin injury but Adlene Guedioura is on international duty.
MOTD COMMENTATOR'S NOTES
Conor McNamara: "These two were promoted together in 2014/-15 after a close battle in the Championship. Bournemouth beat Watford to the title by just one point.