Read your post again. Logic suggests you are way wrong. Have you seen how many of our ex academy plays, most of whom barely had a chance here, are doing well in the PL? They might not be world class, Cole aside, but are very effective.
So why then would at least a couple of O’Reilly, Wright,McAtee, Wilson-Esbrznd, Simpson-Pusey doer example do a job for us?
You just don’t know till they are given a chance. Look at Rashford - if you remember he was about 10th choice at the rags but circumstances dictated he had to play and didn’t he score 2 on his debut? He might have turned to shit the last couple of seasons but he came from nowhere and did a job for them.