This current Celtic team is "better and more exciting" than that of Brendan Rodgers' Invincibles.
That's according to former Hoops attacker Kris Commons.
Celtic clinch back-to-back titles on Sunday with a routine 2-0 victory over Hearts at Tynecastle.
While it had been on the cards for a while, the celebrations were in full flow in the stands from the fans, and in the dressing room from the players.
In recent times, there have been many comparisons drawn between Postecoglou's Celts team and Rodgers' Double-Treble winning side between 2016 and 2019.
But with Celtic on course for another Treble this term under the Australian, Commons has branded them a better team than Rodgers'
He wrote in the Daily Mail: "Back at the start of the season, I remember some people having doubts over whether or not Celtic would be able to follow what they did last year.
There seemed to be some suggestion that they might suffer some sort of 'second-season syndrome' under Postecoglou.
"Some people also felt that Rangers would be much closer to challenging them after they came off the back of a Europa League final last term.
"But Postecoglou and his players have smashed it out of the park. Not only have they followed last season's title win and backed it up, they've actually improved in near enough every area.
"Just a few years ago, I reckon a lot of Celtic fans would have marvelled at the football played by Brendan Rodgers' side and felt like they might never see the like again.
"Rodgers' Invincibles racked up 106 points and scored 106 goals. But if Postecoglou's side win their remaining four games, they will actually beat that total by reaching 107 points.
"They will also beat the goals tally of Rodgers' team given that they are already on 105 with four games still to play.
"I've been banging this drum all season. I genuinely believe this is actually a better and more exciting team than we saw under Rodgers - and that's a high benchmark to beat.
"Postecoglou has now established himself as the single most important person at the football club. He is a manager who is revered by his players and worshipped by the fans.
"Even if Celtic were to lose one or two key players this summer, I honestly don't think it would be the end of the world. Postecoglou would find a way to replace them. His recruitment skills and contacts, as well as his eye for a player, are second to none.
"The only man in the building whom Celtic can't afford to lose this summer is the manager himself. He's started building something special and I sincerely hope he sees it through."
