Port Adelaide Magpies recruit Henry Slattery faces nervous wait as ASADA-AFL probe into former club Essendon Henry Slattery training with Essendon. Picture: George Salpigtidis. ONE of Port Adelaide Magpies' marquee recruits this season is facing a possible playing ban in light of his former club's controversial supplement practices. Former Essendon player Henry Slattery signed with the Magpies in November after 99 games with Bombers, the team at the centre of an anti-doping probe. Essendon is under investigation by Australian Sports Anti-Doping Authority (ASADA) and the AFL after allegations fitness staff provided players with supplements containing banned substances last season. If it is found the supplements fall under the World Anti-Doping Agency's (WADA) prohibited list, the entire Essendon playing list faces a raft of sanctions under the league's anti-doping code. If Slattery was found to be in breach of the code, and suspended, he would also be ineligible to play for any club in SA. "As a state affiliate of the AFL, we sign-up to their anti-doping policy so any sanction would also apply to SANFL football," SANFL CEO Chris Davies told the Portside Messenger last week. Port Magpies general manager Brian Leys said he would not comment on the issue, instead pointing to a club-issued media statement which said Slattery "would co-operate with any investigations in his former club." For more news on the Port, pick up a copy of the Portside Messenger, read our digital edition online, or follow Messenger's sport reporting team on Twitter @TheGurus1