I think you all are still overrating Bennett. If this story is true, then Minny is cutting bait on Bennett even though they only have 15 guaranteed contracts and are under the salary floor. They feel strongly enough that there's no reason for them to see what he does in training camp. There's no reason not to decline his 2016 option but still keep him on the roster for the season to see if he develops/is useful to even keep his Bird rights next season. He's deemed useless enough to jettison now, before training camp, even though his roster spot will go to either someone with a non-guaranteed contract or to someone who is as yet unsigned.
If he's bought out, I doubt he gets a guaranteed deal before the season starts. Seems like someone who will go dominate China for the winter.