Something like a powered glider may be good here. It'll fly slow and give him time to react. Maybe a Multiplex Easy Star and a Hitec Neon SS 3-channel radio? If he's going to learn to fly, his parents will have to help along with a couple hundred to get him going. It depends on his parents their financial situation but I've kicked up a lot more than that for my boys as most of us probably have. From what I've read the Easy Star seems to be a rugged little bird and should last him, especially if he can get some instruciton. Kids I've seen learning to fly at that age seem to pick it up quite quickly.

Hogflyer