I think that McTominay, like a number of the team, are slowly growing into a decent side. Confidence in yourself and confidence in others can transform a team into a very good one.
On his day he certainly looks like a player, but by the same token on another day he looks poor. This I think is when he is unsure of how he should approach said game, especially if he is being asked to hold a more defensive position, his instinct is to carry the ball forward, but to hold he will have to play the ball from a deeper position. To me he should set his stall out and play his natural game more often.
I think Ole's approach is sometimes a bit negative, especially against the (so called) top six, which shows in our results against them, which hinders McTominay in my view.
This lad will be at OT for the rest of his career I'm sure, and whether in the team or on the bench will always give his all.