He returns in season 9, after finding out that Ian is in prison for blowing up a van, he ratted out the cartel that he was working for in Mexico in exchange he gets to choose to be Ian's cell mate. He is released and becomes a series regular again in season 10. At the end of season 10, he and Ian get married. In season 11, Mickey lives with the Gallagher's and starts a new business with Ian.