The FA will on Monday investigate whether Watford's Richarlison dived to get the penalty that helped his side win over Arsenal.
The Brazilian fell in the box after minimal contact from Hector Bellerin.
FA bosses will look into the incident under new laws allowing retrospective punishment for divers.
Richarlison could escape an FA charge if footage shows there was contact with Bellerin.
If he is found guilty, he will become the first Premier League player to be punished under the new rules.