Teams I could see having interest:
AZ - Ghost has thrived there, but likely not a longterm fit. Capobianco and Dineen havent seized a spot. Moser and Kolyachonok both seem to have bright futures but not likely ready for the prime-time yet. He could find a roll there.
DAL - maybe something around Lindell? He would need to waive his NMC, which might be an issue, but clearing up his salary would leave them room to re-sign Klingberg, Oettinger, Robertson longterm while also leaving enough room to retool, make some trades, etc. Not that Dallas needs to move Lindell... but my impression is he has fallen out of favour a bit.
FLA - only established LHD is Forsling (Weegar is a RHLD). Lots of intriguing young players who have not fully grasped a spot in the lineup (Heponiemi, Denisenko, Heinemen, Noel, Smilanic, Schwindt, Sourdig, Gildon, Ludvig) + other young players who are still finding their footing (Luostarainen, Tippett).
MTL - they severely lack PP options on the back-end and should have plenty of opportunity to grab a top 4 spot longterm. Lots of young players. Maybe a deal to be made around Toffoli or Savard. I could also see us taking back Kulak as a throw-in/cap-dump.
NSH - as always, their bottom pairing seems in-flux. Only PP option is Josi... Brann could help on their PP2 and play on their bottom pairing, maybe their 2nd pairing long-term.
NYI - no secret their D is a bit in flux... Pelech, Pulock and Dobson provide a strong core, and Mayfield is a good 4/5D, but
beyond that they are mostly counting on some of the leagues oldest players and some prospects. Robin Salo looks promising, but may not be ready yet. Even longterm, they only have 3 legit LHDs (Pelech, Salo, Bolduc) and two of them are young prospects. Almost no offense from their back-end this year - Brannstrom's 13pts in 30 games last year is a better pace than any Isle D has hit thus far this season. Brannstrom might be able to solidify a 2nd pairing role there.
WSH - Schultz hasn't had the desired impact, Alexeyev hasn't progressed to the point where he's knocking on the door... Brann could play 2nd/3rd pairing and PP2 for them.