My $0.02 as a Canes fan. The 4th OA pick for Necas (extended)+ would have been a coup for the Canes. Based on what I read, I do think CLB was considering it, but if Necas wouldn't extend (and I don't blame him), the deal is dead in the water. I have no insight beyond the pundits, but I would have to believe it was Necas + probably our 1st round pick (if not more).
Necas, is coming off a down year but a lot of it is due to deployment. His 5v5 scoring isn't that far off from last year, but last year he played mostly with Svech, KK and Aho. This year, Drury, KK (who stunk this year) and Bunting. Last year he spent a lot of time on PP1, this year it was PP2. That's what drove his numbers down and I can see why he might be upset in a contract year.
I have said all along that if he get's traded, particularly without an extension, the return will disappoint many of my fellow Canes fans, which is why I'd rather keep him.
Still, with Chytil's injuries and Robinson being of little to no value to Carolina, this is a poor offer.