Unless they decide to raise him in a cave with no language I would suspect that the “neanderthal” will turn into an unrecognizable part of society, except for maybe the extra large forehead, smaller stature, etc. that some other “moderns” have. I wonder if his vocal chords are developed enough to achieve proper speaking or would he just be normal, etc.
I like Man vs. Wild and Survivorman, I would like to see how he would fare, but that would be cruel, denying him an ipod and all that.
I have a sneaking suspicion that there’s not much difference between us and them. I think they are just a unique combination of physical traits that are not so common today. I’d like to see a search of existing humans for neandertal like traits. THen using composite photography, combine all the best ones into one photograph. I bet you could “make” a neandertal out of living people in this manner.