By Mike McDaniel The longtime NFL coach retired on Monday after 39 years in the NFL and 50 years total on the sidelines. View the original article to see embedded media. Romeo Crennel retired on Monday after 50 years of coaching and 39 years in the NFL, the Texans announced. “Football has been my entire life and it’s been a dream come true to coach for 50 years,” Crennel said. “There are so many friends to thank who have helped me and supported me throughout my career. I especially want to thank the fans and owners of the New York Giants, New England Patriots, New York Jets, Cleveland Browns, …