Bellerive does not work in this situation because he was signed on September 16th, 2017. Perfectly legal (Between the conclusion of the draft and the beginning of the season). Once the season starts, you have to re-enter that draft. If this contract was signed between July-September, it would make perfect sense. However the contract was not. I know what I am talking about. I would really like someone who is knowledgeable about the rules.

Because Bergmann's a draft-related unrestricted free agent. He doesn't qualify for the draft anymore, so now he can sign with whichever team he wants, whenever he wants.