There is no agreement needed because it should be automatically declared vacant as a general rule in boxing. Another disgraceful decision by the corrupt WBC. It is too unfair to the other fighters that worked hard to improve their ratings for a chance of getting a title fight. The WBC can just tell both Garcia and Haney to rematch for the vacant belt.

Although it seems like Ryan is not interested at 140 anymore. At the moment, it is Sandor Martin that is ranked 1st in the WBC ranking and he can fight Haney for the vacant belt if Ryan won't drop to 140.