The fatal error that Jose Mourinho made against Bodo/Glimt that Celtic manager Ange Postecoglou must avoid

THEIR most expensive player cost just £500,000, the sell-out 58,000-strong crowd inside Parkhead will be the largest they have played in front of in their entire 105 year history, they have just lost their three best footballers and their last a competitive match was over two months ago...