I'd have to the Rangers already have the guy I would want and that is Jaromir Jagr. The guy brings everything to the table. He is carrying this team on his shoulders right now and he is looking like the best player in the world.
But if I had to choose from another team it would be Alexei Kovalev. I'm sorry but this guy has just been incredible with the passes he has been making every night. And his wrist shot as looked amazing. Great velocity and accuracy. I have NHL Center Ice and I watch him all the time now. My dad is a huge Rangers fan, but likes the Canadiens because of Kovalev and we always watch him play. And I like Kovalev too. But he has really been that good this year so far. And I have to say if the Rangers had him right now with there current roster he would do a ton of damage because his teammates cant finish off his great passes with a goal. If he came here with the likes of Straka, Nylander, Hossa, and Prucha or I'd still say Fedorov then he'd be in amazing shape in terms of points.