Collingwood's Jaidyn Stephenson is under investigation by the AFL Integrity Unit for allegedly betting on an AFL match.
It is understood that the Magpie was informed of the alleged indiscretion during the mid-season bye round.
AFL chief executive Gillon McLachlan refused to comment on the investigation.
Should Stephenson be found guilty, he would face a hefty suspension.
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Collingwood teammate Jack Crisp was fined $5000 in 2015 for placing a bet the previous season, claiming he forgot that AFL players are not allowed to bet on football.
Former teammate Heath Shaw was suspended in 2011 for betting on football, missing eight AFL games.
More to come.
