Mason's contract finished and wasn't extended though.
I'm honestly not sure if we've sent someone under contract packing before?
There's been plenty who have jumped ship of their own accord of course. Scott, BJ, Darius etc etc.
Edit: I guess there has been packer/wicks/houston himself.
There were quite a few in Bennett's first year - Wes Naiqama, Junior Sa'u, he was off contract, but Zeb Taia ...
Beau Henry before Bennett even got here.
Cory Paterson.