If Bradley can't go it should be Ray. In this series, even a hobbled Ray is better than Pietrus or Sasha. He can guard Turner, hit open shots better than either of them, and is a better decision maker with the ball.
My issue is we still treat Ray like he's the same guy as at the start of the season. Plays we run for him don't work because he doesn't get open at a high percent, eats up the clock and can be guarded by a single man. Running the offense through him doesn't work because he has trouble with good defensive pressure. He should play more like Pietrus, stand at a spot and wait for open looks.
He's got to take on a supporting role and people's expectations have to change because he can't be who he was (at least not until he gets healthy which isn't definite).