Dirk is too loyal to the Mavs. If he does end up leaving (which I find doubtful in the first place, even with Dallas striking out yet again in FA), I just can't see him going to a rival like San Antonio.
I think both Biyombo and Ezeli will be out of our price range. I mean we just saw Mozgov and Noah get $16 and $18 million per year respectively. Have to imagine Ezeli and Biyombo will be getting at least $14ish million a year. Can't see the Spurs moving that type of salary just to bring in one of those guys.
Someone who I haven't heard much about, however, is Pachulia. He's been really solid the past 2 years in Milwaukee/Dallas, and he might be a bit cheaper than those other two. If we can't bring in Pau, I wonder if we'll take a look at him.