Well, let's play it this way: Can you define a test that can determine if a an entity has free will, or not? As an example of what I'm talking about, and to clarify my earlier statements, one part of such a test might be:
If you can perfectly predict what that entity will do under any given circumstance, it cannot be really be said to have free will.
My earlier statement was to point out that even in a completely deterministic, non-quantum universe, this test would fail. What other requirements would you put on free will?