Postecoglou's staunchest footballing ally couldn't say no when offered a reunification in Japan.
The pair first worked together when Postecoglou was briefly at the helm of Greek club Panachaiki nine years ago.
The association blossomed during Postecoglou's tenure at Melbourne Victory and Cklamovski rode shotgun as an assistant coach during his four years at the helm of the Socceroos.
Cklamovski was in charge of analysing and assessing opponents for the Socceroos, and worked in tandem with his boss to find ways of giving Australia a competitive edge.
He was a ubiquitous presence on training track and more recently coupled the role with his commitments as Australia's Under-17s coach, having been selected to replace Tony Vidmar.
In his first tournament at the helm, Cklamovski's Joeys topped their group in a qualifying tournament in Mongolia in September.
But the lure of a return to club football alongside Postecoglou was irresistible and he tendered his resignation to Football Federation Australia just before Christmas, and will jet to Japan to join Postecoglou within two weeks.
Cklamovski gave an insight into his working relationship with Postecoglou in an interview with the FFA website, in which he said: "He’s a special character, a humble and honest individual.
"Has a high level of integrity, plenty of experience, good and bad which have definitely chiselled him from a coaching point of view.
"Instinctively you just learn. I’ve been talking to my family and they say, ‘you sound like Ange’.
Though officially unveiled, Postecoglou will only take the baton in Japan on the departure of Frenchman Erick Mombaerts.
His farewell match is Monday's Emperor's Cup final against Cerezo Osaka.