If we're making lists and checking them twice:
Specifically guys who play on the right side -
Brandon Carlo - With a possible cap crunch in Boston they may need to make moves though I doubt he's available in trade within the division but he's a fine RD.
Kyle Clifton - UFA who plays with the snarl they've wanted out of some of their depth guys but a slice above all of Stillman/Lyubushkin/Fitzgerald
Damon Severson - UFA who has been a very solid 2-way guy for the Devils for a long time, seemingly about to be squeezed out of Jersey's lineup.
Will Borgen - My desire, not indicative of his ability to play 2nd pairing minutes or even if he's available from Seattle. I want Spud back.
Mackenzie Weegar - The new contract is a doozy and flies in the face of what Adams has said, but his rush defense and in-zone defense are better than anything the Sabres have had in almost 15 years in that regard.
Matt Roy - Would have to be in trade, LA trying to make room for their influx of talented prospects.
Connor Murphy - The Hawks are in the throws of the tank, and this guy has been on the acquire list now for so long it feels like a Regier trade in the making.
Dante Fabbro - History as Josi's partner, potentially on the outs in Nashville who are shuffling things around.
Matt Dumba - UFA who probably gets more money than I would be comfortable with.
Chris Tanev - Trade protection aside, he did play at RIT and he's from Ontario. Then there is his age and that he will be hurt/miss at least 20 games a season.
Scott Mayfield - UFA who probably gets too much in term/AAV and plays in a highly structured team on the Island.
Jordan Spence - Also a trade and one of the few non-roster guys who intrigues me.
Braden Schneider - Very young and while more proven than Spence, I like Spence more at the moment.
Now for the alternate idea of finding a partner for Dahlin and shifting Samuelsson to Power's pair:
Nikita Zadorov - Yes, I'm sober. Yes, he has struggled on less structured teams. Yes, there is only one season until he hits UFA. Yes, he is physically dominant and a bit of a dumbass at times. Yes, he says he enjoyed his time in Buffalo and felt the organization and the owners treated him top notch when he was here the first time. No, this isn't only because he might put the snarl into the blueline that is clearly missing, but it would be entertaining as f***.
Erik Brannstrom - Dahlin's old U20 partner who is nothing like a face smashing baby eater, but he's actually been good at defense in a depth role for the Sens... This? This would be a gamble but man, I would be interested in making that bet.
Samuel Girard - Cup winning, signed for $5M for a while yet, long-standing possible move from the Avs has been floated around... and they already have a uniform that would fit if they cut Bryson loose.