The cost is the key. I wouldn't want to see Kakko or Lafreniere in the deal. I'd try to hold Chytil out of it if possible as that opens a hole at C. If there is a deal to be had that centers around guys like Buchnevich, Kravtsov, and Lundkvist, then we have the depth to make that kind of deal without opening a big hole in the lineup. But what is an acceptable deal for Buffalo's front office? It depends on how much of an issue Eichel is and how many other teams are willing to part with assets and take on the cap hit.
And that's the challenge --- there's only so many guys we can take off the table before the deal falls apart. Already, as of earlier updates, Kakko, Lafreniere, Shesterkin, Fox and Miller were all off the table. So that leaves Kravtsov, Chytil, Lundkvist, etc.
I don't know if there's a desire for Buch, which kind of creates a challenge for the Rangers because with or without Eichel, Buch is a prime candidate to be moved. So let's say the 5 untouchables are indeed off the table. That means Kravtsov and Chytil are almost certainly part of the package going the other way. I have a difficult time envisioning any scenario in which we don't have to include them if we're keeping Lafreniere and company.
So now we have Eichel. We still have to move Zibanejad. We probably aren't committing to Strome long-term. We no longer even have Chytil as a third line option. So right off the bat, we're going to have anywhere from two to three different centers behind Eichel than we did before we acquired him.
Buch, because of his next contract, probably still gets moved (it's a distinct possibility regardless of whether we acquire Eichel or keep Zibanejad). But now we don't have Kravtsov potentially stepping up to fill that role. Now we have Kakko and maybe Gauthier? That's a big drop off.
So how do we solve that? We'd have to be clever with returns for Zibanejad and Buch. Which, to be fair, is do-able. But it also means we're talking about major upheavals to both the center and right wing position.
Depending on the cost, that's my biggest concern.