Several of Manchester United's senior players are "angry and frustrated" with Jose Mourinho's man-management this season.
Sources say Mourinho's decision to strip Paul Pogba of vice-captaincy is merely the latest episode to bemuse the team.
Pogba was absent from the team as United were eliminated from the Carabao Cup by Championship outfit Derby County on Tuesday night.
A source who is close to Pogba's agent, Mino Raiola, has said they believe Mourinho has lost his greatest asset: the ability to cajole, read and relate to his players.
United's management remain supportive of Mourinho despite only a handful of players now fully behind him.