The English Football Association was The Athletic tipped off by a bookmaker. The British medium knows which player it is, but does not want to reveal this during the investigation. It is not known in which match this yellow card was given, nor is it known how much money the gamblers made. The FA has since announced that they have indeed launched an investigation.
In the Netherlands, Tom Beugelsdijk was accused of spot fixing last season. There was a lot of bet on a yellow card from the Sparta defender against PSV, he denies involvement.