I wouldn't make this trade either. Trading Rondo is the worst idea possible.
As an aside, that line-up does sound pretty sick: Rondo-Bradley-Green-KG-Howard. Still wouldn't do it.
But... don't you think Danny would? With his mindset, and considering how much he loves and is investing in Green, I don't know that I'd be surprised to see him move Paul to get that done. In some ways, I think he's a great GM. In others, I think he's awful. Lucky to have Doc around to create that family-oriented atmosphere and maintain trust in the locker room.