It digs a little, too much so perhaps, into the Spurs 2010 money, but Portland might well part with Martell Webster. He's the odd duck out at wing, and they wouldn't mind shedding his contract prior to next summer, I'm sure. Too bad for the Spurs that they don't have anything to offer. Maybe the Blazers would do Udoka, Bonner and a second for Webster. Doubtful, but maybe. Just a stray thought.
FWIW: Webster is a good, not great defender, who is fairly effective as an offensive player. He has some ability to get to the rim and is good as a three point shooter. Long term, I think he is a better fit for the Spurs than Udoka. He won't play for Portland, but he could start at sf for the Spurs.