This was the guy I wanted before we got Posey last season (mostly because I didn't think Posey was possible). Udoka had a fantastic season with the Blazers 2 years ago, then an alright season with San Antonio last season.
The rotation at the 3 goes something like Finley/Bowen/GInobli with Udoka being the odd man out. Part of me thinks the reason why the Spurs haven't moved him is because while they don't need him now, they will soon with Bowen being 36 (I think) and they are just grooming his replacement.
In any case the trade Im thinking is
Leon Powe, 2nd round pick
for
Udoka
No serious cap ramifications for either party, and Powe brings some energy and toughness to the Spurs second group.