Well, I suppose never say never. But it would surprise me if that's how it went. If he doesn't want to play for the Canucks and/or wants to put pressure on them, he'd need to either play out his four NCAA seasons or request a trade.
I think Willander has the power in this situation because of how high his floor is. I don't see any way that he isn't an NHLer in some capacity, so there will always be teams interested in signing him. It's guys who are more of long-shots or boom/bust types that have less negotiating power because they need to pounce on the first contract that's offered to them.
So the only reason to go to the SHL in my opinion is to start making money. But it still feels weird, because I can't imagine he'd be making more over there than he wouldn't even on a lesser NHL ELC. Willander strikes me as a very patient, methodical, smart young man. Obviously I don't know him personally, but it would shock me if he made an emotional decision here.