gavrikov is a stay away for me. we'll have to see how he does on a pretty good los angeles kings blueline but i think the columbus defense is bad because he is bad not vice versa
graves is a good target. he's a very solid all around defender. i think he'll reup with new jersey though. that's a team on the rise, they have plenty of cap space and they'll almost certainly prioritize keeping graves over severson
carson soucy in seattle is another good target. soucy is somewhat redundant in seattle with dunn and oleksiak playing ahead of him but he's probably their third best dman after dunn and larsson and he can play both sides. the only real downside to him is that he takes a ton of penalties. he'd be a terrific partner for either hughes or hronek
connor clifton on boston is another interesting potential free agent although i think he too resigns with his team. he too can play both sides and gets a lot of ice time. i don't think he's a sure thing top 4 defender but he'd be a great utility guy to bring in if he comes cheap
after that things get dicey
you have orlov, dumba, klingberg and severson who can all probably help out but who will all come with high price tags and questionable effectiveness going forward. shattenkirk and gostisbehere are available but not really what vancouver needs. dumoulin, cole, hamonic, moore, gudas, kulikov and holl are all veteran guys who can help but you don't want to give any of them term. gardiner might try to make a comeback. maybe worth a flyer. scott mayfield is a no offense bottom pairing guy that would be worth signing if you could get him cheap but i suspect given his circumstances he's not interested in cheap. niko mikkola, robert hagg, trevor van riemsdyk, andreas englund, gavin bayreuther and kyle burroughs are all credible bottom pairing kind of players that will be available