I think it depends on what NYI's outlook is with Darche. Are they trying to get back in the playoffs or do a 2-3 year rebuild? Are they shopping Dobson because Dobson wants out, or that they aren't willing or able to pay him what he wants? Hard to tell as someone who doesn't follow NYI. And even then, there are a handful of teams that have room for Dobson too, but would he sign in those cities? Is he chasing a bag, willing to play for a team on the rise like Anaheim or my Blues or is he wanting a cup sooner rather than later?
As a Blues fan I'd hope a Bolduc + first + B prospect/roster salary dump package would be enough if Dobson forces Darche's hand (as others said, think of all the hullabaloo about Zegras...and then what he went for), but I may be in a minority where I would live with Kyrou for an extended Dobson. It creates new roster issues to handle for the Blues, but guys like Dobson simply don't end up on the trading block very often and I think he and Broberg would be an incredible d-pairing for the next decade.