No way they trade Tarasenko, or at least I'm not creative enough to think of a deal that would work. The perception around the league I believe is that the Blues need game-breaking talent, trading Tarasenko is obviously not how you solve that. Pietrangelo if he won't resign would be on the table I presume, but if he will re-sign there is almost no way they trade him. Their GM is way too smart to sell low on him given the Blues current predicament and his contract expiring.
Parayko is an interesting piece ala some sort of Seth Jones - Ryan Johansen swap. Do the stars align out there with a team with a perfect match, or a team thats stupid enough to overpay with a superstar forward for an RHD (lets not name any names here). Other than that, I see lots of potential quantity for quality deals that Armstrong will try to put together like he did for ROR. Some buy low candidates like last years Kane, O'Reilly, Skinner, Karlsson etc that he think can resign maybe