Their personalities have rubbed against each other for a while now. It played out behind the dressing-room door, away from the cameras.
Outlook
Repeated incidents may damage dressing-room status.
Promised more playing time by the manager
Serious
Cause
The discussion focused on playing time.
Asked the manager for a private conversation
Serious
Cause
His relationship with the manager has soured. His relationship with the manager is steady but tense. He has already raised this with the manager recently.