What is the old saying? Don’t go looking for something if you can’t handle what you find. You want to buy him a beer and ask him his side of the story and report back? Otherwise it sounds like he’s made his peace with justice, done his time, and is trying to get back to work. If you can’t work with him maybe it’s not the company for you. Would I invite him around my wife or daughter? Probably not. Could I build a house or assemble a car or dig a ditch with him? 100%