I think Memphis just signed West.I hope the Spurs take a look at Delonte West. He just signed in the D-League with the Legends. Cuban already said that there's no chance that they sign him again.
He would bring some much needed playmaking and defense to the backup point guard position. Another plus is that he has played a lot of minutes as a shooting guard, so he should be comfortable playing off the ball too.
Unfortunately the Spurs have already passed on other head cases like Blatche/Martin showing that they are not inclined to take a gamble.
It is definitely a red flag that he managed to get himself kicked out by a reputable coach like Carlisle though.