Beachemin and Bieksa are already 5/6 D that are playing with Lindholm. There's no point losing a third just get another unless he's young and has potential. Barberio is already 27, and won't even be playing on his comfortable side. Drop a 2nd or a prospect/bottom 6 player to get a 4+/3- guy if you're gonna find someone to play top 4 minutes, and even if you are dead set on the 5/6 D route, there are a lot of 5/6 guys who are right handed and more experienced than Barberio and could play with Pettersson on the 3rd line if the Hampus pairing doesn't work out, without that line being a defensive liability.

Pass. If your gonna make a move for a D it better be a top 4 guy who slots in with fowler otherwise Pettersson has been solid and the break up of the top 3 works. Lindholm and Manson can be put back together late in periods and games.

Barberio has great fancy stats, and although he's been pegged as a 5/6 guy he could easily work as a 4D next to a stud defender like LIndholm. Barberio has played both sides and is a huge upgrade over the awful play of Beauch and Bieksa.