Bring back Staal of course.
I thought Buchnevich was a center? Isn't he coming over this year?
Buchnevich is primarily a LW.
Rangers center depth will be slightly thinner than it was this season if we let Dominic Moore go (which I'm pretty sure we will) and Eric Staal walks (which he absolutely will). That will leave us Stepan and Brassard as 1A and 1B, along with Kevin Hayes and Oscar Lindberg as 3 and 4, and Lindberg spent most of this season on the wing. And really nothing else after that remains on the depth chart (literally only Adam Tambellini and Chris Brown remaining under contract currently). Boo Nieves and Steven Fogarty enter the organization on ELCs come training camp, and they'll be the top young talents in Hartford at that position most likely.
So basically even if we keep Brass, Step, Hayes, and Lindberg--which is a huge IF--we'll almost certainly be on the market for a real 4th line center as well as extra depth.
As for the defense, let's assume for a second that we can't get rid of Staal or Girardi and we fail to re-sign Yandle. That leaves us:
McDonagh-Girardi
Staal-Klein
Skjei-McIlrath
So we do theoretically have 6 D already pretty much no matter how you slice it. But I'm sure we're going to be on the hunt for reinforcements on the blue line. There isn't much waiting in the wings on defense after Brady Skjei (maybe Ryan Graves?), and I'm sure even if we have to keep Girardi we'll be looking to move him to a role where we don't have to depend on him as much as we have in the past, say the bottom pairing or even as 7D. So yes, there will be some need for a defenseman.
And all of this, of course, assumes we don't REALLY try to rock the boat and trade away some surprising core pieces like McDonagh (the Post has already floated the idea of trading McDonagh, and all their suggestions were stupid). I'm really not sure where the organization is going to be making moves this year, and I think it may be our most unpredictable offseason in quite a while.
I expect us to be unusually busy on draft day.
lol I know) that Rangers might need D help if Yandle walks. 
