It always amazes me that people like this bother to adopt animals, when they have no interest in them whatsoever. Why did they adopt this dog ? I think that if someone was to approach these neighbours with an offer to buy this dog they would go for it. Or maybe just an offer of a new home would be enough.
If you wait long enough no one will want this dog as it will be totally screwed up. Time is of the essence here.
Are there any organizations that rescue dogs in this person's area?
It seems that this young person is more responsible that the stupid people that own this dog!!