Erik ten Hag refused to take questions from Sky Sports in a stand-off with the broadcaster who currently pay billions to cover the Premier League.
United media officials blocked a stunned reporter Gary Cotterill from asking questions during the Dutch manager's weekly press conference ahead of their visit to Southampton.
The respected veteran reporter was not told exactly why Ten Hag would not take a question, despite his best efforts to get in a question.
But he believes United's actions stem from a game late last season when United visited Crystal Palace and Cotterill attempted to ask Ten Hag questions outside the stadium, even though he was not officially in place as manager at that time.