By that logic, if they sign Napoli for league minimum plus incentives, they are technically not locked into keeping him until spring training either because they could release him anytime. But in practical/effective terms, as I explicitly stated in the comment that started this tangent, just like Napoli in that hypothetical, Kinley is locked into a 40-man spot into at least mid-March. Now if you want to argue that overall it doesn't matter, because they could just as easily cut Boshers if they need a spot in the meantime, or finally trade Vargas or Grossman or whatever, that makes sense. But in regards to Kinley specifically, it is illogical to deny that he's here until at least mid-March. And if one is doubtful of his chances of sticking and contributing this year, then I think it is a fair to question even that modest level of commitment.