It's pointless to move him if you don't have a guy who can replace him and play his minutes with similar level of play or better.
With that being said, if we did have that replacement I would be looking at trading options. Getting a skilled top6 winger to play with Drai or McDavid, or even Nuge, would help this team a lot. But if you do that deal right now that just opens up a hole on the back-end that we have no one to fill. It sucks that Sekera got hit with all these injury issues, otherwise there would have been a pretty good case to make a deal and upgrade the forwards.
Anyway, I'm not opposed to keeping Nurse either. He's a flawed defenseman and I really think the lack of high-end hockey IQ is starting to really shine through. He has well over 200 games now and is still making the same mistakes as he did his first year. It's pretty brutal to watch him on the breakout, and it's brutal to watch him in the offensive zone where he just has no idea where to go or what to do with the puck. His shot is as big of a non-factor as any other defenseman on the team too.
On top of all that he consistently makes poor reads defensively and loses coverage. It's pretty interesting to watch and compare him and Larsson actually. Nurse is probably twice the skater that Larsson is, but which of the two do you see lose his man and be out of position more? Nurse. There's no reason a guy with his size and skating should lose his man the way he does, as often as he does, but to me this is a classic case of a player who reacts to the play, versus a guy like Larsson who is proactive and gets in position before the play happens. Nurse is often that split second too slow in processing what's happening out there on the ice.
Well, this turned into a long paragraph but as I was saying, even with all his flaws I wouldn't mind keeping Nurse. I think it's unlikely he ever becomes a top pair D but I think at least he could be a very serviceable and relatively cheap #4D for years to come, and that is still a very good thing to have on a team. Russell and Sekera aren't going to be here forever. Nurse is still young and him and Bouchard (or Larsson) could form a very good 2nd pairing for the next half-dozen years or so. So unless you have a clear replacement in line (like if Jones were to prove himself capable in a large sample size, or Sekera comes back healthy and plays at a very high level again, something that seems unlikely) it's rather pointless to move him.