He was the second player, and one of only four in the school's history, to be selected in the draft and play in the NFL after playing college football at ETSU, a school which no longer fields a football team.
Despite a Pro Bowl appearance in each of his final two seasons, Ferrell's career was cut short due to problems with illegal drugs. In 1988, Ferrell reportedly tested positive three times for cocaine, and prior to the 1990 season, he was suspended for one year due to another failed drug test. He never played in the NFL again.