Everyone wants Danny Ainge's job. Except me, I value things like sleep and the original color of my hair. Still, everyone wants to play "armchair GM" and come up with a creative move to get their favorite free agent target to Boston. We've mentioned this before, but it bears repeating. You can't sign and trade Nenad Krsitc or Jeff Green because of a new rule in the CBA.
C's can't sign-and-trade with Krstic - Boston Celtics Blog - ESPN Boston
After the tomfoolery that occurred with Keith Van Horn (Nets land Jason Kidd) and Aaron McKie (Lakers land Pau Gasol), the league closed a loophole in the new CBA by noting that a player can no longer be included in a sign-and-trade unless he finished the previous season on the team's roster.
Also, don't hold your breath for any potential deals with the Heat involving Ray Allen. They are legal, just unlikely.
Don't expect sign-and-trade between Celtics and Miami -Celtics blog - Boston Globe basketball news
The club could potentially work out a sign-and-trade deal with the Heat, meaning they would sign Allen to potentially a three-year $18 million deal and then trade him to Miami for perhaps a player or draft picks, allowing Allen to earn more money and the Celtics to get a player back. According to Celtics coach Doc Rivers, that is not likely to happen. "I doubt it," Rivers said. "I don't know if they have anything to give us. I doubt it. I mean if they want to give us (Dwyane) Wade, then yeah."
For more light reading on the CBA, see Larry Coon's FAQs here.