I recently came across a quote by Richard Muller (“Grace, Election and Contingent Choice” in The Grace of God, the Bondage of the Will) in which he disagrees with a commonly held misconception about Reformed views on Freedom. There he says:
It was never the Reformed view that the moral acts of human beings are predetermined, any more than it was ever the Reformed view that the fall of Adam was willed by God to the exclusion of Adam’s free choice of sin. The divine ordination of all things is not only consistent with human freedom; it makes human freedom possible. (270)
I’m looking forward to reading more on this in his upcoming book on the Divine Will and Human Choice, which should be out early in 2017.