Free will depends entirely upon the concept of willful actions on the part of an agent of free will. There is however no such thing as human action, there is but human reactions. All organisms are reactive creatures and the fact that they must be motivated to move spells reaction not action. Reactions are the process of organisms functioning in the world of being of the world. Reactions are what biological evolutionary adaptation work through. The is not one example anyone could give me that would indicate that an individual could commit an unmotivated action, there just is no such creature.