I basically trust Blurnandez's assessment of this guy's defense as much as I trust any scout. Defensive scouting reports are just notoriously unreliable and borderline useless. In one of the scouting reports, a guy says he has the best throwing arm of any shortstop and one sentence later he says he doesn't think he can stick at SS. There's tons of hedging and smokescreening in all of these reports. Say what you will about Keith Law and how often he's wrong, at least he makes his (wrong) assessments plainly.
If the Jays like his defense enough to sign him, I will be inclined to believe them. They've been right before (Brett Lawrie whose defense the scouts hardly loved) and they've also been horribly, horribly wrong (the MI fiasco of 2013 where they ignored bad defensive stats from two key acquisitions). After acquiring Martin and Donaldson, it really does seem like the team is taking defense very, very seriously and being thorough about it as opposed to just paying lip service to it. I'm going to trust that they will do their homework and get this one right (get whoever thought Brett Lawrie would be a good 3B to look at him). For the first time in a long time, I feel, perhaps naively, like I can actually give the team the benefit of the doubt and since that's just way more fun than being despaired all the time, I'm just going to trust that the team assessed this guy properly and made the decision whether or not to sign him accordingly.