I’d have liked to see more of a direct connection made, as Roger Penrose has attempted.
In any case, seems to me that, although not a proof of free will, it is an underlying assumption of the scientific method: The scientific method requires that the experimenter create conditions in the universe that would not exist, except for action taken by the experimenter. If the experimenter can do this, he must to some extent be free of the universe.
Also seems to me that determinism is inconsistent with theory of evolution, which doesn’t allow useless attributes to survive. If the sense of free will contributes to the survival of humanity, it must be as real as pain, pleasure, thirst, and hunger.