Jarvis + Morrow + 2023 1st is my guess on a Carolina offer.
If NJD are not including Mercer, then they'd have to counter with probably Holtz + Zetterlund + 1st, but think that the Carolina offer would be better of the two with Jarvis > Zetterlund (younger by 2 years) and Morrow/Holtz in the same tier right now.
But if Grier turned down a pair of 1st round picks plus a guy that was just a 1st round pick 18 months ago, I'd think that the deal that he's getting has to be pretty dang good one way or another. Would really like a blue chip defensive prospect out of this deal given how few answers we have there in our system right now and the likelihood of grabbing a blue chip forward prospect with our 1st rounder this year.