Lots to say about conceding so early and the way we did, and also lots to say about the fight and character of this squad. That said, this system (Eriksen partnering with Casemiro, Rashford on the left, Bruno as attacking midfielder, and a proper striker- which by the way should be Sancho, not Martial, until Hojlund is ready) is far more suitable to this squad than the two 8s.
Hope ETH is keeping receipts. When Mount comes back, he should go either on the right wing, or behind Bruno. Recasting players where they don’t belong is a bad proposition. The metal of a good coach is to create a system that suits his squad, not the other way around.