They don't really have anyone that you would consider a contract dump. Arizona took Datsyuk, and Carolina took Bickell, because they had 1 year left. All the big money guys here are signed for too long for something like that.
Going by capfriendly, they're a little over $59m for next year. That's without Toffoli, Pearson, and various other RFA's. That's $14m if the cap doesn't decrease. Figure an additional, say, $6m between Toffoli and Pearson? That takes it down to about $8m. A few other RFA's, another few million. Lose someone in the expansion draft, so gain a little bit of space.
They can basically bring back the team they have, plus another player or two from Ontario. Maybe add a 3rd line kind of forward in free agency. If Forbort, Gravel, and LaDue make Muzzin or Martinez expendable, then they could bring in a top 6 guy in a trade. I would think Muzzin brings back the better player.
I imagine that's about it though. I would guess they pretty much have the core of the team that they'll roll with for the next handful of years.