If you mind having a crower might as well let him into coop and have a harem. If he becomes a problem eat him. I imagine he'll be gracious for the feed and housing. Pick an afternoon set up a lawn chair with beverages and open the run door. He'll likely go on in, say hello and roost with the hens that night. I'd watch him until he roosts. It would be entertaining. Then close it all up, he's yours.