If Nashville fall out of a playoff spot (they're currently 4th in their div, and 8th in the west, on the edge), and become deadline sellers, I'd honestly be pretty interested in bringing Luke Schenn back. He had an injury to start the season, but has been healthy since. Living on the west coast, have caught a handful of Preds games, and to me he looks like the same player as last year - very physical, strong defensively, make simple but fine plays with the puck. And he was SUCH a good player for us last year, just an excellent fit with Rielly.
I don't imagine he'd cost too much? Something like this would probably get it done?
To Nashville: Minten
To Toronto: Schenn with 50% retention ($1.375 AAV this year and the next 2)
Or if he could be had for something like Hirvonen and a 3rd, even better, but personally I'd do Minten for Schenn if there's 50% retention. Having two dependable vet dmen at dirt cheap prices due to retention (McCabe and Schenn) would be really nice for the cap squeeze next year.