The Wings cant say they knew about it. If they admit they dealt a player that was definitely bolting they would be sanctioned by the league for not negotiating in good faith. It would also prevent other teams from ever trusting the Wings in any deals from then on. They will never admit they knew anything.
You gotta source to validate what you're saying there? like, in the CBA or something? To me, management having an idea of their players futures doesn't mean much. I really don't know either way and I don't want to google for it. You're not just making stuff up to make this trade look a little better right?