Some may argue that there is no quiet time when it comes to life in a Glaswegian fishbowl.
But Celtic fans are free to admit that Friday the 28th
The Australian, despite his solid track record, was an unknown quantity to many as many parkhead players down under sought insights into their waiting boss.
And those who know him best extolled the virtues of an uncompromising manager who had a clear idea of how football should be played.
Postecoglou kept that end of the deal, but some Celtic fans are starting to blink after beating Bayer Leverkusen 4-0 – a seventh loss in all competitions before entering October.
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A record of three league wins out of seven is cause for concern, but his supporters in Australia remain firm in their belief in boasting.
Here is what they said.
Tim Cahill (former Australian international)
The former Socceroos star played for the national team under Postecoglou and made a significant contribution to the team that won the Asian Cup in 2015.
And he understands why some parkhead supporters worry, but believes good things will come if they persevere with the 56-year-old.
Speaking to The Age, he said, “This is football.
“I don’t know a fan who doesn’t get nervous when he loses or questions his manager, whether it’s Barcelona, PSG or Man United – the biggest clubs. You can sign the greatest players, no wins or trophies guaranteed.
“But the only thing about Ange is that his heart is there, and they see it and love it. That’s all the Celtic fans want. You are passionate about seeing someone fighting for the badge.
“That always brought me very close to Ange, he really looked after Australia and gave everything. In the end he didn’t get to  WM and that was a massive loss for us. “
Simon Hill (Australian journalist)
The respected broadcaster believes that Celtic needs to be patient before seeing results.
On Twitter he wrote: “Interesting reading of Celtic fans’ comments on Ange after her last defeat.
“Almost déjà-vu from his first year with the ‘Roos. Hoops fought hard – the beginning is confrontational, but as we all know here, the rewards will come.”
Vince Rugari (Syndney Morning Herald)
That led Rugari to respond to Simon Hill’s original after fellow journalist Ray Gatt also pondered how things were going under Postecoglou.
And he believes Celtic needs to stay on course rather than just acting short term.
He said: “To be honest, with the current state of play on and off the field, I wouldn’t do what Real or Barca do! In my opinion, the reality sometimes is this ‘big club mentality’, that demand.” for instant results is actually the worst for a club trying to get out of a deep mess. ”