Manchester United banned journalists from four major publications from attending Tuesday's press conference with manager Erik ten Hag.
Reporters from Sky, ESPN, Manchester Evening News and The Mirror were not permitted into the Trafford Training Centre.
The ban was United's response following reports claiming that several players were unhappy working under Ten Hag.
A club statement explained: "We are taking action against a number of news organizations. Not for publishing stories we don't like, but for doing so without contacting us first to give us the opportunity to comment, challenge or contextualize.
"We believe this is an important principle to defend and we hope it can lead to a re-set in the way we work together."
Ten Hag later said during Tuesday's press conference: "They should have come to us first and not go around our back printing articles - that is not the right thing.
"If the players have a different opinion of course I will listen, but they haven't told me, or maybe one or two [players], but the majority want to play like this - proactive, dynamic, brave."
The press conference had been called to preview Wednesday's Premier League home game against Chelsea.
A 1-0 defeat at Newcastle on Saturday was United's 10th loss of the season in all competitions.
Despite this, Ten Hag's win percentage as United boss is higher than that of any other manager in the club's history.
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