Jackson was a second round pick who was seen as the best player available, which is how you make picks in the mid-40s. He is not good enough to make the Celtics roster next year, and will be traded for a future (maybe mildly protected) second this summer. He's got 3 team-friendly years left on his deal, and has shown enough in the D-league for someone to take a flyer. If he can crack a rotation as a backup PG in years 3 and 4, his salary (the minimum) will be a bargain for his new team.