I took a look at a few of the defense options that Carolina has been linked with during lunch, and you guys aren't gonna like my conclusion. Namely that Erik Karlsson might actually make sense for the Canes ... so long as they're moving on from Burns.
First of all, let's talk Rasmus Andersson. I honestly don't get the elevation in his status that I'm seeing from the hockey press. Perfectly decent second pair RD, and paid about what you'd expect for that. But the guy barely moves the game impact needle at all. He's basically a replacement level player offensively and a net negative defensively. I get that he skates well and might be a much better fit in Carolina's setup ... as is true for anyone you contemplate parking next to Slavin ... but he's just so meh. I do not get it at all.
Karlsson on the other hand, was a terrible fit in Pittsburgh. They over-used him, and never really did bother to even try to find a partner that suited his game. Even so, he still moves the needle on offense to the point that he's a net positive player. He's never going to be some sort of defensive stopper or anything but he can still run a power play like nobody's business and his skating is still excellent. He'd immediately be Carolina's best breakout organizer, which is something the Canes have really, really lacked on D since Hamilton left. Forget the Pens, since that was just a mess that never should have happened. Instead remember his play in the 4 Nations tournament when he was excellent when paired with competent partners. If Carolina could figure out the salary stuff, avoiding over-paying to get Pittsburgh to retain enough to make the math work, then he's a two season stop-gap while you get Nikishin ramped up at worst and maybe has one more solid run in the tank.
I looked at UFAs too, but other than Gavrikov ... who I think will re-sign in LA ... and maybe Provorov ... who I've never really liked, to be honest ... you're kind of stuck with Ekbald. Who is another guy I see sticking with his current team.