lol, accusing others of being intentionally obtuse. The only player on that list who was moved after turning 20 was Valencia, and he, like Ox, was a failed winger.
This^ , it's really not that complicated, all of the examples you give @arsenescoatmaker are quite different in nature.
It's simple, really: would we want Ox playing as a midfielder or winger? No. He was a big prospect who we invested 7 years in developing as a winger/midfielder and who proved not good enough, and we found a use for him as a wing back. Simple as.