Chris Wallace has done some absurd things, but that rumor is hard to Believe. Even if it means getting CP3, Memphis gives up too much talent for one player. Doesn't make any sense. Take Rudy Gay out, trade becomes more realistic.
As far as Rondo, No way Ainge Trades him. Unless we get Lebron in return, Rondo is untouchable. Rondo is what 24? He hasn't reached his full potential yet. And he isn't anywhere near it. Few years from now, Rondo could be considered the best PG in the NBA. Ainge would trade KG or Pierce, before he touches Rondo.