The forward had been released by Hibs after a few injury plagued years at Easter Road that had also seen him loaned to Livingston and Partick Thistle. It was believed he had turned down Derry's advances to come to Paisley on trial, but seems to have changed his mind and signed for the irish side.
Oh well, I didn't reate him highly anyway as my article from earlier today will confirm!
Story source: BBC Sport