In my mind, yesterday was further evidence that you don’t need two fast CBs to play a high line.
What you do need is a proactive GK and a good press from the forwards.
Martial, Rashford, James and Bruno all worked really hard and that’s vital if we’re going to play high. You can’t have a high-line without a strong press, even if you have peak Van Dijk and Rio at CB. The question is, can Martial and Rashford in particular maintain that work-rate against “lesser” teams?
Furthermore, if you are going to play high you need a GK willing to be aggressive with his starting position. We didn’t need Henderson to be playing “keeper sweeper” yesterday because City aren’t that direct - but we might do against sides like Leicester. De Gea just can’t/won’t do that for me.