Ange Postecoglou has vowed Celtic will learn harsh lessons from their painful day in Paisley.
But the Parkhead boss is facing further problems with £6 million defender Cameron Carter-Vickers a big doubt for the next Champions League showdown against RB Leipzig. Postecoglou was left bitterly disappointed after his side’s 364-day unbeaten Premiership run was ended by St Mirren.
The Aussie’s team were off it in every department and he made no attempts to brush it aside or put it down to just a bad day. Instead, Postecoglou is adamant his team must take on board what went badly wrong and said: “We just weren’t aggressive both in action and in thought. We kind of tried to ease our way into a game of football and you just can’t do that. You’ve got to be at it from the start and we weren’t. You can’t take all the praise as you go along and then expect people just to brush over it.
