You need more information, really. Does he want to build one – for many, the thrill is building something you can then fly. If he just wants to fly, consider something like this:
You can fly it inside the house, in a gym, anywhere there’s not much wind. It’s a good intro to flying. If you don’t have access to a place that seldom (if ever) has wind, try something like this:
Also, has he ever flown before?
Look around on the web for ‘park flyers’, and I’d recommend going electric over glow (and definitely over 4-stroke) for a beginner.
Hobby Lobby (not the craft shop, but the RC shop) is a great source. Stay away from helicopters – they’re tough to fly and a beginner can get frustrated quickly. Stay away from anything big, anything that looks like a jet or military, and anything that mentions acrobatics in the ad. You want a stable beginner plane to learn.
Happy to help, and feel free to PM me. I’ve been flying for years.