Troy Deeney was not happy to be on the bench at Tottenham and the tension between Watford's club captain and manager Walter Mazzarri could push him closer to the exit.
Deeney was only brought on in the 70th minute at White Hart Lane, when Watford were already 4-0 down.
Mazzarri claimed he did not start his captain because of his 'physical condition' but Deeney is believed to have disagreed. Watford's manager told the 28-year-old to 'respect' his decisions.
Everton, Leicester and West Brom have looked at Deeney before.