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.
Praised by the manager for his attitude
Serious
Cause
The discussion focused on his attitude.
Stayed back for extra training
Moderate
Cause
He stayed back for extra work after the rest of the squad had gone in.
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.