Wouldn't be surprised if Lukaku is gone within a couple of years.
I know we paid big money but, with the inflation in the transfer market, £75m isn't a ridiculous fee and we'd probably recoup most of that if we flogged him to a second-tier club.
He'll score bags of goals against the smaller clubs but Rashford is already a more complete player than him and he's much younger. Lukaku isn't really good enough for an elite club, whereas Rashford certainly is.
Personally, I hope we start phasing in Rashford as the 9, which would free up a spot for Martial on the left.