I don't know, but since it's written in the CBA or whatever there must be some reason a player might choose to invoke it. My understanding is he still has an option. So exposing him to other teams isn't even necessary. It's just a question of him seeing it as being in his own interest, as you say. It's possible he'd see it differently. If he's concerned about his next contract, he may be optimistic and believe he's better served to put up some good numbers in the majors than at AAA.