At the moment it looks like Greenwood to have the best career of those 3 but things change very quickly in time so you never know. James Wilson looked very good to have chance to make it here and now he's gone to the SPL. Injurries have a big impact on a player's career as well as the mentality (that's the most important one imo) and personality. Remember Januzaj in the tour 2013 and the season after that? He looked a certain future player for us but his poor mentality caused him his downfall.
So I hope our youngsters avoid serious injuries & don't act like "they made it" as soon as they get chances in the first team and work harder all the time. At the moment all 3 along with McTominay, Garner, Tuanzebe etc. (hope TFM will add to that once he recovers from his injury) look very promising don't they?
I'm really excited for our youngsters right now.