I think he goes to Miami because of the cash, but I agree with bc11oc - he really should come to San Antonio.
It really depends on how big his ego is. If he won't come off the bench, then he'll choose to go to Miami or Minny, where he could start. If he really wants to win, he'll come to San Antoinio.
But I ain't worried - we'll win it all in 2006 with or without Finley.