I like I said in the other thread. With the salary cap decreasing, I think players of Rondo's caliber + years of experience have a really good chance in landing a maximum contract next year, particularly because teams that have been making space for the big shots might no longer be able to afford them or fit them under the cap constraints.
So, I can easily see some team just dishing out 12 million or so to land Rondo, particularly if we go deep into the playoffs and Rondo performs similarly to what he did last year, the good and the bad included... which I think will be mostly good this year.
Shooting for the 16+ 18+ million people will be quite tough for most teams, even those that are best prepared for the off-season.
As far as Rondo's attitude goes, and surely there are some question marks here and there, at the very least he's a hard worker and a unique talent. He's young, and in a worst case scenario, he should still be quite tradeable of if needed be.