Tony's value peaked in the days before the 2009 draft.
With the Hill trade, the chances that Tony is traded this year have practically disappeared.
I can imagine one scenario where Tony is traded at the deadline:
1. Tim has told the Spurs that he will retire at the end of 2012.
2. Injuries or poor play make it obvious that the Spurs have no shot at competing for the le.
3. The Knicks have given up any hope at trading Billups for one of their prime targets to team with Amare and Melo.
4. Then the Spurs trade Parker and RJ to the Knicks for Billups/filler/and a young player plus future draft pick(s).
5. At the end of the 2011-12 season, that would leave the team with one more year on Manu's contract and a bunch of young players on smaller deals and in full blown rebuild mode.