Isles fan coming in peace, I would take what BD Gallof says with a grain of salt. He hasn't been close to the organization for about a decade now. The only one Islanders-specific reporter who has legitimate connections to the team is Arthur Staple.
The ONLY thing I will say is true top pairing defenseman are very rarely traded, and that there are only a handful of those top pairing guys who are true game changers on top of that
(at least our head coach Doug Weight thinks so at least)
In today's NHL, if you want a legitimate top pairing defenseman and/or game changer on top of that, you have to draft one (unless you're willing to move MacKinnon).
I'm not saying there is a deal to be made between the Islanders, but they do have five defenseman that they would like to protect in the expansion draft and four of them are legitimate top four defenseman with the exception of Pulock. When the Islanders acquired Leddy and Boychuk a few years ago, it completely transformed the team because they essentially added a top four pairing, even if neither of them were top pairing guys at the time.
The Islanders can offer one of de Haan, Hamonic, or Pulock if that's the direction Colorado wants to go in and Nelson or Strome if Colorado wants an NHL forward coming back, or one of Bellows or Dal Colle if that's the direction they want to go in. Maybe the 15th pick on top of that.
With a team like Minnesota having too many D to protect as well, maybe they can add a second top four defenseman and acquire an entire top four pairing this offseason.