Neymar and Cavani clashed over who should take a late penalty during Sunday’s 2-0 victory over Lyon at the Parc des Princes.
Cavani missed from 12 yards and L’Equipe reported that the pair had to be separated by team-mates in the changing room after the match.
The French paper now claims the Brazilian has apologised to the PSG squad following the incident.
Manager Unai Emery revealed on Thursday, that both Neymar and Cavani would be trusted to take penalties. But he refused to reveal who was his preferred choice.