I'm thinking Thibs has an agenda if he comes to Boston.
Remember what Brad said in his interviews regarding analytics? He said he talk with Thibs about that and Thibs answered "yeah, we used to call that statistics".
So I'm speculating here, Thibs has his 9mil in the pocket already, why not take a year off and learn from a young genius coach how he used those analytics and improve his coaching ability in order to be a better coach for next year?