Why would we want Sharp? He's older than Cammalleri and doesn't get us any younger which is a real issue. Sharp for Cammalleri is a lateral move. They need Sharp going into the playoffs just as much as they need someone for Kane.
I don't think there's really much of a chance we trade Camm, but if we did Id ask for Teravainen, 1st in 2015, 2nd in 2016, and we'd probably have to take a roster player (i.e. Oduya) making a few million back to make the money work unless they found another deal first.
And I could see them making a move like this (not for Cammalleri necessarily) for the playoff run, they can worry about trading off Sharp or another $ player in the offseason to get under the cap. I just dont think its realistic at the end of the day and Im not advocating it at all, but if it was to happen I ask for a lot.