It’s not just the players though.
It might help if i was clearer what i meant. It's not obvious that Glass has any idea how to make his tactics work.
To break down packed defences by passing around you need some movement. A celtic midfielder 25 yards out will have someone running past him, someone running channels or into space wide, and someone else running across the back line. We'll be lucky to have one of those and will mostly have players static in their starting place. I say mostly, because we can have good movement and did for most of the second half yesterday but it feels like something the players occasionally figure out rather than their instructions.