That is my issue with Zucker TBH. You can't keep kids who are lighting it up in the AHL down for another year or so. I wouldn't put it past him not signing a deal.
Since when is Zucker lighting it up in the AHL? 12 points in 16 games is good, quite good, but it's not exactly what I would call lighting it up (at least not when you're making the argument that he doesn't have anything left to prove there, not that I'm trying to put words in your mouth, just extrapolating). When he's been called up to the NHL, he hasn't been good there. He's not ready yet for a full-time NHL duty. Maybe this time he'll prove us wrong. One of these times he probably will, this year or (more likely) next. Last year he forced Yeo and Fletcher to keep him up. This year he hasn't, and that's not their fault.
If I'm being a cynical observer, I would almost argue that he keeps forcing them to send him down.
Wheeler was a special exception, due to the way the rules of FA was structured within the CBA at that time. It had something to do with him going to college as long as he did, allowing him to become a different class of FA, though I don't remember the exact details. Maybe somebody else who knows more can chime in on that. Zucker, I am 99% certain, isn't in that situation.
Now, if you're arguing that someone could offer sheet him, I'd say good luck to it. We'd either match it if it's low enough, or if it's high enough, let him go and get some nice draft picks in compensation.
What I think he would get offered is something in these ranges, listed as price per year - offer sheet compensation:
Over $1,682,194 to $3,364,391 - 2nd round pick
Over $3,364,391 to $5,046,585 - 1st round pick & 3rd round pick
If he gets offered less than 3.364m, I think we'd match it. If he got offered more than that, why keep him as a pricey, not yet developed, defensively suspect (non)scorer? Honestly, looking at this, there is no team in the league that I think would even risk an offer sheet on Zucker.
*Edit* Those are 12-13 offer sheet numbers. They'll be a little higher prices this time, but it doesn't really change what I think teams are willing/not willing to do.