I am very doubtful we are going to promote a relatively slow no 10 as winger,we dont have that luxury. The competition is high, promoting youngsters is hars, but promoting youngsters in their non-favourite positions is maybe even harder. Someone like Januzaj was like the faster Gribbin with a better action but even he struggled after his 1st year. The injuries have had a lot of impact on his development too, has he really progressed from two years ago? He is still very young but almost 19 and has no perspective on first team football yet whilst he hasnt been setting the world alight in this season so far either.
He is very gifted and talent but misses the complete package, which considers mentality, determination on the pitch and physique too. Someone like Foden isnt a beast but is able to use his body very well at this tender age.
I'd have Greenwood, Chong (who isnt more gifted), Williams, Tuanzebe ahead of him in terms of potential, albeit playing different positions.