The shouts are probably still echoing around Parkhead as well as ringing in the ears of the players.
But everyone at Celtic will have got the message from Ange Postecoglou.
There will be no backward steps for the Hoops boss.
Postecoglou lost his rag with his side on Sunday for daring to dither on the ball and pass it backwards instead of going at Raith Rovers.
Celtic eventually won 4-0 after a stirring second half to reach the last eight of the Scottish Cup.
But their gaffer wasn’t too chuffed with that opening 45 minutes and didn’t hold back in his post-match press conference.
Postecoglou’s mood had lightened by the time he hooked up with some of his former sparring partners in the Australian media yesterday.
And they were not surprised to see their old pal letting rip with a routine they’ve seen for nearly two decades.
Postecoglou opened up to the Aussies about his time at Celtic. The tough start and the European lessons, the importance of his industrial recruitment drive and his hopes for the future.
But there was reminder for his Hoops squad he won’t accept anything other than his own way. The law was laid down on day one and it hasn’t changed.
Speaking to former player turned broadcaster Craig Forster – who he famously had an on-air bust up with when he was Socceroos youth coach in the early 2000s – he said: “You know I’m not a Plan B kind of guy! You’ve been at me for the last 15 years about this!
“God bless you, I love you for it, but I just don’t compromise, because ultimately the key thing at the end of the day is winning football games.
“Obviously you’ve got to get it right quickly, so you try to accelerate that process as much as you can by giving as much information to the players as possible.
“For me, the test comes when things aren’t going smoothly. It’s probably why in all the jobs I’ve had, the initial period is always rocky. It’s because I don’t compromise at the start.
“Obviously players and even staff struggle with it initially, just to get the concepts right, but I just don’t compromise on that.
“Ultimately, it’s the football I want my teams to play, which is a big driver for me, and it’s been very, very successful. I just think it’s the way to win, for me, as a manager.
“I always say, if you want me to go out and set up a team to sit back and get a point then I can’t do it. I don’t know how to do it, it’s just not in my skillset.
“I’ve said a few times, when I walked into the football library I went to one section and I stayed there.”
Celtic may have been off the boil for a spell against Raith but the squad are clearly on board – because it’s a group Postecoglou has hand picked from all around the globe.
The Aussie admits he leaves his wife Georgia to do the shopping but he knew exactly what he wants in the transfer market.
Postecoglou said: “I could go into a shop with my wife and she’ll know exactly what to pick and buy. And mate, I’ve got no idea!
“When I go looking for players I’m the same. I’ve got a real clear idea.
"When I see what I want I picture them in my team and when they fit that picture most of the time it works.
“The players I’ve brought in have hit the ground running and people ask why so quickly?
"But it’s because I already know they’ve go the attributes I’m looking for and the rest is just understanding the gameplan.”
Postecoglou walked in to chaos in the summer after the failed 10 in a row bid but he’s got a trophy in the bank and in the hunt for three more.
He admitted he simply didn’t have the time to muck about as he knew failure wasn’t an option.
Postecoglou said: “You rarely pick it up when a team is flying.
“When you’ve come off a season when you’ve won nothing at a club like this, there needs to be a massive reaction.
“I kind of knew the magnitude of what I needed to do. It’s been pretty good so far and I’ve had tremendous support from the fans and good support from within the football club to take it in the direction I want to.
“But I kind of knew there was always a ticking clock against me to get it right as soon as we possible could.
“People thought I was worried about my own tenure but it wasn’t just for me – I just knew a football club can’t go two seasons without success.
“It just can’t happen so I knew I had to get it right this first year and we’ve won a trophy, we’re doing okay in the league and we’re still in Europe.
“We got through the Scottish Cup so we’re doing okay mate but we’ve still got plenty to do.”
