José Holebas' stunning goal nine minutes into the second half earned Watford all three points against Middlesbrough.
Watford climbed into the top half of the Premier League with a 1-0 win against Middlesbrough thanks to Jose Holebas' second-half strike.
Press Association Sport reports that the FA's governance team will study Mourinho's comments and may wish to contact him for observations.
Mike Phelan's big day was ruined as Bournemouth thrashed Hull City in his first match as permanent manager.
English Premier League: Jose Holebas (54') Middlesbrough 0-1 Watford
It was a long time coming but Stoke finally claimed their first win of the season, courtesy of in-form Joe Allen's double against Sunderland.