I think Rashford, at his best, is good enough. He already has a decent record for England, and has shown he can score goals in the Premier League. He just got stale at United and should have moved a couple of years ago for his own sake.
Even if he proves to be a bust moving fwd; can't blame Tuchel for wanting to try to resurrect his (until recently) productive England career.
We need(ed) pace and goals either side of Kane
Sadly clueless Gary failed to recognise what he himself did best and turned a potent counterattacking team into a blunt dull possession one.