Andy Halliday has highlighted the biggest 'disparity' between Rangers and Celtic.
Michael Beale arrived late last year to replace Giovanni van Bronckhorst at the helm and suffered his first defeat as boss to the Hoops in the League Cup Final. He took in his first transfer window as Light Blues gaffer and brought in two recruits in the shape of Todd Cantwell from Norwich City and Nicolas Raskin from Standard Liege.
Ange Postecoglou has now had numerous windows to work with and has recruited in all departments. The strength of his Celtic squad now is evident to Hearts star Halliday by looking at his bench and the changes the Hoops gaffer can regularly make on the hour in a game to keep the tempo and quality high.