He was given a random drug test after a senior match late last season and has returned positive A and B samples.
The player had been training with his club until recently.
Leader understands he has received notification from the Anti-Doping Rule Violation Panel of a possible anti-doping violation.
He is awaiting an infraction notice from AFL/AFL Victoria that will outline any sanctions.
The VFL conducts drug education sessions at all of its clubs every year but has had players suspended under ASADA rules.
In 2012 Frankston’s Matt Clark was banned from playing for two years after consuming a drink known as “Hemo Rage’’. It contained the prohibited substance dimethylpentylamine.
In the same year Casey Scorpions player Wade Lees was deregistered for 18 months after purchasing a fat-burning product online. It was intercepted by Australian Customs, which informed ASADA.
The product was found to contain traces of a prohibited steroid.