Could see something like...
TOR
Subban ($2 mil retained) (cap would be $7 mil AAV x3 years)
Granlund (50% retained) (cap would be $2.875 x1 year)
NAS
Kadri
Zaitsev
Brown
Bracco
Nashville benefits in clearing the space for Josi, filling hole created by Subban leaving, Kadri much more cost effective option than Duchene to fill C hole, a useful player in Brown and player with upside and skill in Bracco.
Toronto benefits in clearing the cap hits of Zaitsev and Brown, filling the glaring hole on the top pair RH side of our D in Subban, and replace the hole createed by trading Kadri with a cheaper 3C option in Granlund whose cap would come off the books at the end of the season.
Toronto would have $12 mil in cap out the door in Kadri, Zaitsev, Brown and Bracco assuming they were all on the roster, and $9.875 coming in with Subban and Granlund, but in the process filled their biggest need and got rid of Zaitsev's deal.