Jalen brought up this idea on Simmons' podcast today.
Bargnani for Nash, straight up. (Although I'm thinking Toronto would have to throw in a 2nd rounder or something).
Nash is the backup everyone wants for Lowry. He also gets paid a little less than Bargs. And Bargs in a D'Antoni system would be one of the few places he could thrive in.
It works straight up: http://espn.go.com/nba/tradeMachine?tradeId=c7vp7p4
I mean personally I'd take anything for Bargs that didn't take in more salary but this kind of makes sense.