I've seen this idea floated a few times on the forum.
Let's say there's some team picking in the 7-10 range that isn't wild about this draft, maybe already has a couple of talented young scoring type, that could really use a young, elite defender. A team that would be willing to trade down to #16 if they got Avery Bradley in the bargain.
Would you be okay with making that trade if it meant selecting Shabazz Muhammad? Muhammad seems to fit the profile of the kind of guy Danny Ainge likes in the lottery. He's athletic, was highly touted coming out of high school, has a knack for scoring, and is falling a bit in the pre-draft process because of he fell a little short of expectations under the high scrutiny of being a top recruit in his first year of college. Harrison Barnes was a similar guy who Danny reportedly really liked last year. Muhammad also kind of reminds me a bit of Tyreke Evans, another player Danny supposedly really wanted to trade up for.
Don't get me wrong, I love Bradley, but for a rebuilding team I think the value of a guy who is almost all defense and really raw / extremely dependent on other players in order to be productive offensively is somewhat limited.
On the other hand, it's not easy to find young wings with good size (6'6'') who have the potential to be 15+ ppg scorers.