Thank you for rescuing this budgie, I am sure that he will have a longer life with you than he would have had outside.
To answer your question about the wings, this is a hot topic that can result in very heated exchanges. Yes, he will always want to fly.
I am of the opinion that birds are much better emotionally if they are allowed to fly as that is their natural way of locomotion. Some people clip initially in hopes of having an easier time in taming and bonding with the bird, and as the clipped feathers molt out and new ones come in they do not clip any longer so the bird can regain his ability to fly. What size cage is he in? You can provide some extra perches to help him get around.