Their roster for next season is at 57 million, and other than Macelli no one should be getting anything significant, and even Macelli they can bridge pretty cheaply if they want. Getting Myers lets them do stuff like move Schmaltz though and save money that way. I don't see anyone other than Keller or Crouse making big money on that roster that they wouldn't ditch in a second if they got a fair return. And Myers has value among GMs as a rental if he's dealt retained at the deadline.
If they don't need Myers cap hit, they still get a 2-3 million dollar player for 1 million dollars and flexibility for later. It's not like they'd be within striking distance of the cap with him there.
I do agree that him going to the Ducks is more likely, they might even give something up for him since they're completely barren on the right minus Drysdale. Chicago has Jones, Murphy and Zaitsev on the right already and as a big market team they don't care about pinching pennies, hence getting Zaitsev now despite his upcoming bonus