On a more serious note, let's say we get a proper top CF like Jimenez or someone else in the future, and our RW is still a problem with or without Sancho.
*LW -- CF -- RW*
Martial -- Jimenez -- Rashford
Think it's time for Rashford to finally make RW a position where he can excel in. Would also improve his overall games especially crossings, passing, speed play, trickery, one-touch football, vision and decision-making. His passing, vision and decision-makings are improving on the LW. But I'm still not satisfied that he have problems playing on the right consistency-wise. I also think Martial's best position is still LW and he's so much better in offering plenty more threats there against park-the-bus teams than Rashford.
But of course, Martial is growing and improving in his overall games in the CF role, so getting a top RW is still a priority.
I miss United having wingers that can attack in all directions, left and right ala Cristiano Ronaldo, Giggs, Nani, etc. The closest to those level we get is Pogba who can actually play on the wings, either side. Then there's Williams and Dalot, and previously Young.