So First things first, I think there are still moving pieces to this before it happens, but based on right now this is what I came up with. So as far as Structure. I think it will take a goalie, and top level young defensemen, a solid forward prospect, and a solid forward roster player along with a pick. Buffalo will be losing the best player so they need to stock up on solid proven players. If the Rangers want Eichel I think this is the huge price they will likely have to pay.