Dumping salaries will be the last option Danny takes.
Ainge wants picks or a nice young player for Bass, Humprhies, Lee and now you can include Green.
At worse you can get back a 2nd pick for any of these guys and some definitely a 1st round pick.
IF nobody is willing to give up a pick or young player than by the trade deadline, definitely Wallace and Humprhies for Amare will happen.
Then likely Amare waived.
Getting rid of Wallace and Humprhies also = more time on the floor for Faverani and we can also bring up Osby.
Amare+Shump for Wallace+Humphries+Lee works for both teams, and the best "asset" the Celtics would get is cutting down some millions from the cap. Of course, if Shumpert could get back to 100%, he would be the best piece for the Cs, but you can't count on that.
Knicks have no other assets outside of Hardaway Jr., and they need useful players. As of today, Humphries, Lee and Wallace are better players than Amare or an injured Shumpert. The Knicks are in cap hell anyways, and after this trade they would be able to cut Hump's salary at the end of the season, while fielding a better team around Melo.
Wallace is not a scorer, but he can defend, can annoy LeBroid/Wade/Paul George/Pierce... he's useful for them.
Lee is healthy, can defend and can attack the basket, unlike JR or Melo. He's a good complement for the Knicks.
Humphries is a solid big, I actually like him a lot as the first big off the bench, but we can afford him. He could be useful for any contender, so he is a good fit there.
After that trade, the Celtics would still have Bass/Bogans/Crawesome to try to get one or more picks. Those are the easier to move contracts. Bogans pseudo-expiring can bring a young prospect, and if showcasing keeps going, Bass+Crawesome can bring a first round pick alongside a bad 2-year contract (Perkins?). That bad 2-year contract would be highly useful at the 2015 trade deadline, just like Amare's. A contender just can't have 25-30M in dead weight, but in this scenario the Celtics could afford that.
I hope Danny is looking for this kind of flexibility.
I'm sorry -- but this is all just wishful thinking. Your POV on the Knicks needs, your analysis of the Cs players and the trade itself.... all wishful thinking.
Teams do fairly frequently exchange junk for junk. Teams don't send good players on rookie contracts to other teams for crap -- not even the Knicks.
Granted it was the Knicks who floated that Shumpert-for-Faried rumor, but you think they've adjusted their goals from Faried to Courtney Lee? Or Gerald Wallace? On their contracts? C'mon....
Amare is not junk, is a walking corpse. And they need players. Lee/Wallace/Humphries may not be as good for the Knicks as I put it, but they're still better than "the best player in the trade" Amare. Come on...
Knicks need to make a trade, Celtics are in no hurry. Probably there won't be a trade, but if they were negotiating, I'd rather be Danny Ainge.
As far as the Manimal to Courtney Lee, as you said, it was the Knicks who were aiming for Faried, so either trade is as viable as the other one.