Yeah the more I read of Anastasiadis the more I like.
Here are some quotes from his Wikipedia page:
"After retirement from playing, and with Yarraville relegated under his stewardship in 2003, he managed to get the side promoted back the next season."
"In 2005, with the return of South Melbourne to the Victorian Premier League after the disbandment of the NSL competition, Anastasiadis put his hand up for the job which few wanted. Despite taking charge of a young squad which had been destroyed by the FFA and was quickly assembled merely weeks before the start of the new season, and which was labelled as a relegation candidate at the start of the year, Anastasiadis led the side to 3rd place on the ladder at the end of the season and as far as the Preliminary Final, where the team lost 1–0 to Heidelberg United was knocked out. It was an incredible achievement for Anastasiadis considering just three players turned up to his first training session at the club, one of which was his brother Dean. Retained as coach for the 2006 season, he led South Melbourne to victory in the Grand Final of the Vodafone Cup competition beating Altona Magic 1–0 in the Grand Final. After failing to make the finals in 2007, South's poor start in 2008 saw Anastasiadis resign."
"Halfway through the 2011 season, Anastasiadis accepted a call from Bentleigh Greens to become the senior head coach. Since the move to Bentleigh, John has seen his team reach the VPL grand final in 2013, the semi-final of the inaugural FFA Cup in 2014 and win the club's first ever major title when Bentleigh beat South Melbourne FC at Lakeside Stadium in the National Premier Leagues Victoria Grand Final."
So he has a history of taking NPL sides in dire moments and having them win silverware or promotion in the next few years. We've all seen what he has done with Heidelberg too - nearly winning the Aus cup is impressive. He has also been assistant coach at Western United so is not unfamiliar with the A-League.
At a minimum we should give this guy an interview if he is interested.