You're speaking like a fan too wrapped up in the Juve-Inter thing, fact is he won't start at Juve but probably will at Inter. If the roles were reversed and it was 2010 Juve he'd have joined us already.
I don't think his Inter past as a schoolboy really helps our view of him, but he's making a career choice. Ultimately how many seasons is Zaza going to spend on the Juve bench? I don't think it'll be beyond 2017.
Edit: Ultimately I think he'll stay at Sassuolo for the EL.
No, what I mean is, go where you want, but don't say Sass and EL when really you just don't want to go to Juve. Fact is, inter or Lazio or Milan may offer him more opportunity, but there's nothing stopping him from staking his claim at Juve either. Sure, you could hint at guaranteed playing time at any of those clubs mentioned above, but why make it seem like you're seeking to grow at Sass, when all you're really doing is hoping Juve moves on to other targets so you can then go to a club like inter or whatever. Just be honest about your intentions. It's clear as day, he just hopes Juve moves on to other targets cos he really hasn't got much more to give the Sassoulo shirt, but he could definitely contribute at Inter and the like. He knows it, but he's just beating around the bush. Ultimately I did think he was a tad bit overrated anyway, so not sour grapes, just don't get him beating around the bush. Fact is, he can grow more at Inter or even Roma, but he's being coy in the hope that Juve pass on him first IMO.