Erik Karlsson should be able to fetch you just a good return as he would have last offseason. He isn't coming of his best season but he was in a cancerous Ottawa locker room and dealt with a very serious tragedy as well. I'd hold onto him and see if he gets traded somewhere. Don't hit the panic button on Karlsson, you'll likely regret it. He's only 28 years old remember, lots of top fantasy production left in him.