Several Red Devils stars have promoted the Leonardo DiCaprio film on their Twitter pages ahead of its release on Thursday.
Chris Smalling, Memphis Depay, Morgan Schneiderlin, Matteo Darmian, Ashley Young and Juan Mata have all promoted the movie.
United did not formally announce the partnership, since the studio preferred the club's players - and ambassadors Bryan Robson and Andy Cole - to endorse the film on social media.
United's players were not paid to plug the film, reports the Manchester Evening News.
The irony is 20th Century Fox's chairman, Rupert Murdoch, attempted to take over United via British Sky Broadcasting in 1998, only for the Monopolies and Mergers Commission to block the deal in April 1999.