Conor McGregor welcomes new son Rian with fiancee Dee Devlin McGregor is set to leave his family for the next two months in preparation for his trilogy fight with Dustin Poirier at UFC 264 on July 10, but got to meet his new son before heading off Updated The video will auto-play soon8Cancel Play now Get all the boxing updates you need with our Monday Morning Matchmaker - sign up hereInvalid EmailSomething went wrong, please try again later. Sign up When you subscribe we will use the information you provide to send you these newsletters. Your information will be used in accordance with ourPrivacy Notice.