Sexton was dismissed on 30 April 1981 , despite having won his final seven games in charge , as United had finished eighth in the league .
Sexton had now been in charge of United for four seasons without winning a major trophy .
Sexton was dismissed on 30 April 1981 , despite having won his final seven games in charge , as United had finished eighth in the league and Sexton had now been in charge of them for four seasons without winning a major trophy .