While I agree that a big man in the mold of Gasol or Jordan should be first on the list, I would certainly be more than happy to call Carmelo a Celtic. I am a fan of Jeff Green, but we just don't have other stars to surround him with and even with a stallwart big in the middle, our sg and/or sf positions would need an upgrade to move near contender status. Enter Carmelo Anthony.
Off the top of my head, I would do Green, Bass, Bradley, 2016 Bkn 1st, 2015 Bos 1st. I understand that they may want Sully or KO - if so, swap Sully and Faverani for Bradley. As far as Smart goes, I would not be willing to part with him, but may relent on Young if they pushed us on it.
I don't necessarily know what I am talking about - it is probably too little (?), but I would certainly be in favor of bringing Carmelo to town.