My gut tells me it'll be Vigneualt, which would upset me very much. An improvement on Torts in that he won't absolutely ruin offensive talent, as we saw with the Sedins, but he's still not a good offensive coach.
The problem with Vigneault's zone matching is that sheltered offensive starts may not be the best for this team's players. Hagelin and Nash excel on the rush, not on set up zone time. It's why they don't really do too well on the PP.