First of all, it might help if you elaborated a little on what do you call Free Will.
I've seen too many people run into dada land based on pretty obvious assumptions. E.g., that free will would somehow mean acting randomly and against all experience or common sense. (E.g., ever since neurological research showed that taking a decision involves building a "for" or "against" signal against it over time and before taking an actual decision -- which frankly is what you'd expect from a neural net vote in the first place -- much garbage has been written to the effect of "see, that proves that free will doesn't exist!")
So what would you include under having or not having free will. Does it suffice if nobody else took that decision for you, or do you exclude subconscious/instinctive decisions? Do decisions taken based on prior experience count as free will, or somehow that makes the universe deterministic for you? Etc.
If we all talk about a different definition of it, that's going to be just a waste of time.