Torey Krug could be available.. any interest?
As much as I believe the Blues need a true two-way top pairing LD now and into the future, I would want Krug at least on this year's squad because he'll be a better asset this year than Perunovich.
I also don't believe Armstrong shares our sentiment about Krug long term. My thoughts are that as Krug stops being productive, that contract gets tough to move, and it will occur before term expiration. Thus, if Perunovich can replace the skillset cheaply, you try to move Krug in a year or two while there's still value to be returned.
But my guess is Krug stays longer, so I'm not going to spend a lot of time thinking about possible moves involving him at this juncture. More about adding another defender without subtracting, for as much playoff depth as possible.
The whole fate of the Blues ability to do this kind of thing is tied up in Tarasenko's situation at the moment, and how that plays out.