This is such a tough call because Horford is a great talent who can score, rebound, and defend, but is so injury prone. Looking at this from Atlanta's perspective while trying to construct a trade with Boston they have to answer a few questions: 1) Am I going to resign Millsap at the end of this season? 2) Do I want to play this season with Antic and Muscala as my centers? 3) I just drafted Payne as a stretch 4, what do I need Olynyk for? If the answers to 1 and 2 are no, then maybe the Celtics could entice them with an offer of Sullinger, Zeller, Young, and Bass as filler. It's a lot to give up, but i think that's what it might take for Atlanta to give him up. I'd prefer to give up two of our less valuable 1st round picks instead of Young, if that would satisfy Atlanta.