Youve got to separate these into categories. Many of these players were seen as having the potential to be solid squad players, very few were seen as being big time first team regulars. That said....
Fletcher was brilliant before his ulcerative colitis, so doesn’t deserve to be on your list.
Richardson, Eagles, Campbell and Simpson were seen as good players with potential to be squad players, but I don’t think there was any hype about them being the next big thing.
Januzaj was hyped to the heavens but not just our fans but also the media, and will go down as a major disappointment. That was a mentality rather than talent issue.
Cleverly was one of those players who was seen as being good, not great, but was being schooled in the dojo of SAF, so anything was possible. He spent most of his career here taking shit from fans, aside from a few heady days when he was involved in that goal against City in the Community shield and the 8-2 thumping of Arsenal.
Welbeck had this unique mixture of flair and work rate. After we played Madrid back in 2012/13, the Spanish media went nuts over him. It was widely seen that all he needed to add was more end product because when he was on, he had it all, but he was still very inconsistent. If SAF had stayed, I believe he would’ve had a great career here. He’s gone on to have a good career, albeit one destroyed by injuries.
Wilson looked electric in the academy and banged in two on his debut. But his mentality and loss of pace killed his career. I think many had high hopes for him but they were internal to the club. He wasn’t recognised as a big talent outside our fan base.
Macheda is a cult icon for that goal against Villa. And he had all the tools, bar pace, to be a top clinical striker. Another cautionary tale of work ethic being as, or more, important as talent.
McTominay has been the target of fan ire for ages, with most believing he’s not good enough. I’d say he’s made it despite expectations rather than failing to live up to them. Think he’ll be a solid squad player for us for several years. Which is a great achievement in its own right.
Greenwood is a massive talent is widely recognised across the country as such. If he doesn’t make it you can file that along with Ravel and Januzaj for the scale of disappointment. He’s already down more for the first team than any of the players mentioned here bar Fletcher, who shouldn’t be included.
Rashford has already put up massive numbers for a player his age. That’s obvious just by comparing him to players like Kane and Ronaldo at his age. If he doesn’t goon to be a huge player for us moving forwards it’ll be a disappointment. He is currently suffering from that capital crime as a young United player, of not being world class every game. He gets so much criticism from people expecting him to be the finished article already despite having gone through 3 managers already, being very young, moving across positions, and suffering a serious back injury. My hopes are high for him.
Rossi would’ve had a superb career if he wasn’t made of glass.
Of our current players coming through, Mejbri is probably the obvious candidate for the next hype train.