I think Rashford thrive in a structured system where he doesn't need to think about making decisions, player to support him, play as the team, and not often isolated by least at 2 defenders, England and LVG play to his strength, one of the reasons why he looks better in system based because they all together work as together. Under Jose, there's no style of play we want to play and has no attacking plan game so player becomes more dependent on decisions making so they can be looking clueless and look like they met each other for the first time, they have to make something out of nothing rather than playing like a team trying to score. A system is everything. Modern football is no longer what it used to be 4-5-6 decades back where a single player can have a basketball like disproportionate effect on the game. This is why there are no lone defenders/libero's running the show. A game is more team based now than it has ever been in its history. And since Space is the fundamental commodity, System assumes disproportionate relevance.
This is why coaches like Mourinho are struggling to adapt. Reactive coaches don't work as effectively in such a state of the modern game.
