As others have pointed out, Ferguson having physical advantages at this stage is actually a reason to be more wary of him.
My oldest is a very good runner and harbours ambitions of being an 800m runner. There is an absolutely enormous drop off of ‘elite runners’ between the ages of 17-21. Because everyone catches up with them and their advantages disappear. Through out the u13s, u15s and u17s, the National cross country and track champions are almost always physically far more developed and born in September/October. At a young age, that means almost 5-10% development in strict chronological terms.
Of course, football is more complicated and there is far more to be considered in how a player will develop. I like Ferguson, but he’s not Rooney. I don’t see that sort of volcanic talent that demands to be played.
He might well become an excellent player. But he could just as easily drift off into mediocrity.