There are 4 possibilities from Rangers: top shelf, MccDonagh, Smith. Also as noted, Holden and/or Staal.
Holden is cheapest in $. His cap is 1.6, expiring. We estimate his cost as late 1st to early 2nd. GMJG will likely hold out for top dollar, but will not wait if ballpark close offer is on the table. Translation: cough up the Oiler 2018 1st, NY will add a 2018 3rd to Holden. He can play either side has decent size and skating. He is inconsistent on D, but like Staal, was often paired with Girardi, who due to being shotblocking champ one too many times, now has statue level immobility.
Staal is the cheapest in asset cost - a conditional 7th, assuming he waives, but he might to the right place since there is a logjam at LD. He has 4 years remaining at 5.7, but Rangers will eat 2.7 reducing your cost to 3m per. He can then be bought out cheaply, or flipped to a cap dweller. Marc was once the best shutdown D in the league --- again, I said SHUTDOWN --- but had a serious eye injury and two or three concussions, varying degrees from which he has recovered. Translation: if you pair him w/mobile enough partner, and do not overwork 20+ mins per nite, perhaps half of that, he will do solid enough man to man coverage and stickchecking. However, he now sucks at handling puck generally and using the stick in particular.
Conceivably, Smith could be offered, think he has nmc this first year, but say he waives. He just signed 4 years, reasonable, he will cost overpayment. Maybe not massive overpayment, but definitely serious overpayment. Like Sekera, shoots left, comfortable on the right. Solidly tough, mobile -- not a speedster, but does not drag. 5% chance he is moved only if Oil pony up.
McDonagh, ONLY reason he is even mentioned is his sweetheart 4.7 per deal is up in 2 years. At that time, he can get upwards of 8m+ multiyear. There is a chance he may do a parallel Chapman rental and return to the Yankees, except he would give NYR a hometown discount to return; maybe, maybe not. If NY is not offered sufficient overpay, probably massive overpay, they hold him. But if a team coughed up enough, GMJG will listen, IMO.