There are a lot of reasons for Grant Hill to go to New York and only one reason to go to Boston. If he wants a shot at a title he goes to Boston, if he wants more money, more playing time, a bigger role, a bigger and better city, a place where is wife will be happier, etc. he goes to New York. It really just comes down to how badly does Grant want a chance at a title. If he feels his career is complete, or does feel like something is missing, etc. then why on earth would he go to Boston.