Danny Ainge's greatest prize in the rebuilding effort is Brad Stevens. The latest method of confirming this comes from a Sports Illustrated piece analyzing all 30 teams from an NBA scout's perspective. While the scout was mostly complimentary about the 2015-2016 edition of the Boston Celtics, the anonymous source positively gushed when it came to Stevens.
I’ve been in the league a long time, and I’ve watched a lot of college coaches come in. Maybe 90% of them don’t make it. Brad Stevens made the smoothest adjustment I’ve seen. In the last two or three minutes, they won more games than anybody in the league.