The Sharks would definitely be able to find a taker for Burns with a little retention. Vlasic truly is that bad, if we were able to move him without giving up assets I would be shocked.
Burns could be excellent in the right situation. By that, I mean on a team who has a hard-minutes top pairing already, which would free him up to be a pure offensive #3D. If you’re in that situation, trading for Burns retained for not too much value could be a home run. But I would caution against rebuilding teams trading for Burns to be a mentor; I just don’t think he’s that player. He’s gotten away with a lot of bad fundamentals over the years because he’s just so big, strong, and ridiculously talented, but I wouldn’t want a young defenseman (like Owen Power, for example) to be trying to emulate him. Burns is a one of a kind player.