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.
His club is fighting to avoid relegation
Serious
Cause
The points gap to safety, with matches running out, is the issue.
Senses a managerial change coming
Asked the manager for a private conversation
Moderate
Cause
He has unresolved concerns over his contract. His relationship with the manager is steady but tense. He has already raised this with the manager recently.