Watford captain Troy Deeney showed Chelsea fans the middle finger after scoring the opening goal for the Hornets from the penalty spot just before halftime.
Deeney has escaped a ban for his goal celebration against Chelsea – and all he got was a warning from the FA his about his future conduct.
Watford feared their captain could be hammered with a four-match ban – two games for the insulting gesture, plus another two for previous red-card offences this season.
But a panel of three ex-referees could not agree unanimously that Deeney’s action would have warranted him being sent off if it had been spotted by match official Mike Dean at Vicarage Road on Monday night.
An FA spokesman said: “Video footage was referred to a panel of three elite former match officials, who were asked to consider independently whether it was a red card offence.
“The response was not unanimous, therefore no disciplinary action will follow. Nevertheless, the FA will write to the player and warm him as to his future conduct.”