Liam Cooper is shite, don't get the calls for him at all.
Calum McGregor is shite, Armstrong is twice the player.
Marshall is number 1.
McTominay will play at the back in a 3, very likely with McKenna and Gallagher.
Robertson left wing back, O'Donnell isn't good enough for international football but will very likely start due to lack of options. Only other thing would be Liam Palmer, he's not great either.
3 in the middle of midfield that I'd like to see would be Armstrong, McGinn and Jack
Christie supporting Dykes up top.