I have no idea how these things work, but while his age is a commodity, he's nowhere near Abreu/Cespedes/Puig level. The power will always be there, but he doesn't have the greatest discipline. Good ceiling but likely won't find it right away, that's not to say a good organization can work with him and turn him into a legit threat.
Like I said though, he shouldn't get the kind of money that the aforementioned players did.