Jobe Watson admits to injecting banned drug AOD-9604 ESSENDON captain Jobe Watson last night made the stunning admission he took the banned substance AOD-9604, but the reigning Brownlow medallist remains adamant he did nothing wrong. The star onballer said he took the anti-obesity drug after signing a consent form. "I signed that consent form and my understanding, after it being given through (club doctor) Bruce Reid and the club, that I was receiving AOD," he told Fox Sports program On The Couch. Asked if he thought the substance was legal when he was taking it, Watson replied: "that it was legal at the time and that was actually what I was told I was being given." Essendon is under Australian Sports Anti-Doping Authority and AFL investigations for last year's supplement program. The AFL hopes ASADA will announce its findings in early August. AOD-9604 has emerged as a major factor in the controversy. The World Anti-Doping Authority issued a statement early last month, saying the drug was a banned substance. Watson admitted that clarification surprised him. "It did, because the understanding we had through the advice we got and through the medical doctor at the football club, that it was a legal substance," he said. Watson and other players have fronted investigators to answer questions about the supplements program. Despite the potential for ASADA to hand down severe sanctions, Watson is confident about his fate. "I don't have a feeling of guilt and I don't believe I've done anything wrong," he said. So all I want is the truth to come out. It's not impacting on me, because ... it's not a cloud having over me. I don't care how long it takes. Watson also admitted he was surprised by the number of injections he received in the supplements program. "I don't know it was that vast, in terms of the numbers being reported," he said. As a player myself, it was a new frontier for us. Having that many injections was something I had not experienced in AFL football before. Meanwhile, Geelong midfielder Steve Johnson was yesterday offered a two-match suspension, capping off a lamentable weekend for the Cats following their loss to Brisbane at the Gabba on Sunday. The Cats, who surrendered a 52-point lead entering time-on in the third term, could be without Johnson for matches against fellow top-four clubs Fremantle and Hawthorn. Johnson was charged by the match review panel with engaging in rough conduct against Pearce Hanley when his bump in the opening quarter caught the Lions player in the head. Hanley required medical attention off the ground before returning and playing out the match. Based on video evidence and a medical report from Brisbane, the incident was assessed as negligent conduct, medium impact and high contact, initially drawing 225 demerit points However, he had a carry-over of 54.04 demerit points after accepting a one-match sanction during the pre-season for intentionally striking Fremantle's Hayden Ballantyne. An early guilty plea would leave Johnson sitting on 9.28 demerit points for the run to the finals. Johnson's tribunal record over the past five years has been poor.