My advice, hour building jobs do not exist in Dubai.
Yes, he can get a licence but GA employment is virtually non existent. Paying is expensive and the flying of limited value apart from testing your patience and ability to survive in hot temperatures.
The major helicopter operators here are well, major operators using high tech equipment with very experienced crew. R22 operators don't exist.
Simple answer, I couldn't think of a worse region for hour building/opportunities to build experience than the Middle East.