After his retirement in 2005 he took up a role of assistant coach working under Kosmina, he was appointed as head coach on 2 May 2007. The 2007–08 A-League season was not very successful for Aurelio Vidmar, his side finishing 6th out of 8 teams on the ladder the first time Adelaide failed to make the finals. Calls for his resignation were being made and his unsuccessful Asian Champions League campaign, albeit against talented opposition, only fuelled these accusations, coming 3rd in his group with only the winner progressing to the quarter finals.