Johnny Ludden of the San Antonio Express News reports that Bruce Bowen has officially signed with the Spurs.  The contract will pay him about $716,000 this year and has a player's option that will pay $825,000 next year, though he will probably opt out to be paid with San Antonio's midlevel exception.  His signing and the expected signing of Danny Ferry means that there is likely no place on the Spurs roster for Sean Elliott.