It is very cool to have your son noticed. Congratulations!
From what I have read on here it is very hard to know what will happen until May/June of next year.
There are a lot of things to consider before this time. Do you want your son to forgo playing in college and furthering his education should he be drafted? How much will it take? Should he look into JC/JUCO instead of 4 year college?
Much to think about, but don't go crazy trying to figure it out. If it was meant to be, it will all work out in the end.
There is a whole lot of good info on here. Good Luck and enjoy the ride, wherever it may lead.