I believe the Rangers are looking for a young center for Laf & Kakko. Chytil ain't it (not really 1c potential), neither are Zib and Strome (age gap). That means a number of trades to sort it out.
I partially agree with you.
I do think they're looking for some young centers, but I don't think it's necessarily tied to Laf and Kakko.
I think we're approaching a point where at least one of Zibanejad and Strome will not be on the roster. That doesn't necessarily mean 3 months from now, but it's likely coming.
I suspect the Rangers would like to have another young option, with growth potential, to round out their roster a bit. I think some of this is for roster balance, and I suspect some might serve as a way to safeguard if they commit to an older center, or re-sign one of Zibanejad or Strome.
For example, I think one way or the other they're going to have an idea this summer as to whether they're going to commit to Zibanejad long-term. Let's assume they do, and for argument's sake that contract takes him from the age of 29-35. I could see them also attempting to move Buch and targeting a young center as part of the return. That young center either hops in on the fourth line beyond Zibanejad, Strome and Chytil, or he gets a ton of time down in Hartford.
The Rangers potentially self-rent Strome, and then the following year either slide their young center up in the lineup (as Strome moves on and Chytil moves up) or promote him from Hartford.
With time, when Zibanejad eventually starts to decline, you'd have the potential ability to shuffle things around a bit.
So that's one potential approach/scenario, out of several.
But, the point being, I think a youngish center is probably on their radar and wish list somewhat independently of Laf and Kakko, though obviously not completely removed either.