This is unfortunate; however, if we had to get an injury somewhere, the 2-guard spot is the spot we can best withstand it. Ray, Pietrus, Daniels, and Pavlovic have all played well at times this year. And Marquis Daniels can do many of the things that Bradley can do (good on the ball defender, good cutter).
I'm not trying to downplay this, it would still suck to lose him. But we're better equipped to deal with his loss than any other starter.