Only you don't trade for Shattenkirk unless you can extend him. Better just to let him go to UFA and see if the Rangers can fit him under their salary cap.
Which they can't do unless they trade away Nash. After that we might be his next best option if the Rangers deal falls through.
Shattenkirk has his mind set on one team, and that is the rangers, he already said no to the oilers and lightning because he didn't want to extend.