Except you then have to replace both players. They likely won't be paid league minimum, so even at a low $2M each, you still need to find another $4M to cut.
Trouba is a 3rd pair defenseman for us.
Lindgren, sure, I don't disagree. Rangers have to figure out their LHD headed into next season.
Not sure I'd be as up for letting Lindgren walk as some Rangers fans (we have a lot of irrational fans that have decided he's finished because he had a bad season last year), but we also don't have a big extension to give out to like a #4, so he'd have to take pretty much no more than he makes right now.
Team can easily find some money elsewhere though. Smith is making 3.75M this season and a UFA next season. Perreault is almost certainly going straight to the NHL, and probably top 6 right away with how good he's looking at BC. That saves 2.75-3M.
Kakko has been talked about as a player who might be traded. He makes 2.4M. We're probably going to need room for at least one of Othmann or Berard (NHL ready top 9 wingers), so that's like 1.5M saved if you make a simple swap there. Quick likely gets replaced by a league minimum backup, so that saves 300-400k. That's at least 4M, maybe up to 4.5M, just from those three moves.