I'm sure plenty of teams would value Harrington, he's a very good prospect and a second round pick coming off a terrific year in junior and a strong performance at the WJCs. Obviously he's not going to be the main chip in a trade for a guy like Niederreiter, but lots of teams would welcome him with open arms. You'd think we were talking about Ben Lovejoy from the tone of your post. I'd also say a guy that's done nothing but thrive since he was drafted last summer probably isn't a flavor of the month, but hey, whatever.
If the isles did not have blueline prospects Donovan, De Haan, Mayfield, Pedan, Kitchon, Ness, Pelech and Pokka in the pipeline, they might have interest
Zero interest movig Nino for propects with lower upside.