I don't think he falls under any current rules so it's something that we just have to make a judgement call on.
We said that international free agents in the system before the rule 5 started were eligible to be drafted / added later.
We said that prospects that hit AA were eligible to be drafted / added later.
We said that prospects that played but didn't hit AA last year are frozen until the rule 4 unless they are added to an MLB 25 man.
I can see the argument for letting waivers sort out guys like Aledmys Diaz. The waiver system is built in, so it's a rule that we don't really have to monitor or anything, which is nice. Having midseason international signings that hit the system be subject to waivers also makes waivers more interesting. And it is a small reward for attentive teams that might notice when someone hits the Yahoo system. It's also in the spirit of competitive balance since bigger name guys like MAG, Abreu, etc., can be claimed by poorer teams if they hit the system mid-season.
What does everyone else think? Let's do a quick survey of fools.
MAG would have definitely been subject to waivers if he signed last year before the season ended, so the way we worked last year would have had Diaz as waiver bait whenever he hits the system.