Murphy was Chicago's best defenseman last year, and while might not be on par with Muzzin, he's fairly close while also being way younger. Murphy would be an amazing addition to the top 4 and partner for Rielly. As for the expansion, go 4-4-1
Matthews
Marner
Tavares
Nylander
Rielly
Muzzin
Brodie
Murphy
Campbell
Leave Kerfoot unprotected and if Seattle takes him, well that just gives us 3.5 million to find a 3C in the off season which will be similar to this off season so you could potentially find a great 3rd line center for dirt cheap or maybe even give one of the kids a chance in Brooks or Abramov