https://www.nytimes.com/athletic/642...cy-defensemen/
Came across this on NHL free agent defenceman. Most of these guys will be overpaid it projects. But it notes Dante Fabbro as a potential Weegar like breakout player.
Maybe if you can swing a deal for Rasmus, you could try and get Fabbro as a replacement. Although he is righthand. I still think you could play Weegar on the left side with Parehk.
Nate Schmidt is another name but after a really good playoff he might see a fair bit of interest. But if you throw money at him for the short term it might entice him. Also notes Nick Perbix as a player with tools who might put it together, but currently shows more as a third pair guy.