David Moyes is facing a reported mutiny from his players who have concerns about his tactics and training methods.
Manchester United has lost eight times in 17 matches in 2014.
The Glazers and executive vice-chairman Ed Woodward are determined to evaluate Moyes only at the end of the season.
Moyes’ perceived cautious approach has been viewed as blunting the team’s attacking potential.
The number of players showing concern has grown following their loss at Old Trafford to Liverpool.