While Manchester United have genuine competition for places these days, the other side of the coin is that a fuller squad usually leads to some difficult tactical conversations. And, as is so typically Manchester United, a new-look frontline and midfield set-up has raised as many questions as it has provided answers. In Saturday’s 2-1 defeat by Brighton and Hove Albion, the Red Devils produced two very different sort of performances in two very different halves. In the first, with Mason Mount and Bruno Fernandes alternating as false nines as they did against Fulham and Manchester City, United …