With Johansen we are just going to have to watch how the UFA market and Cap seem to be shaping up when the buyout window opens up in June. There isn't going to be a trade market. But if many teams are in Cap trouble, and the math says you can do more to make your team better with $5.3M in this UFA market than you can with Johansen at $8M, then you buy him out. But if you can't, or you're not sure if you will be able to, then you keep him.
At least the emergence of Parssinen, Glass, and Novak makes it an option. We never even had the option before.