Manchester United's bench were allegedly showered with red wine by an angry Arsenal fan during their display at The Emirates.
A fan was subsequently arrested, identified via CCTV, after United officials complained to the club.
They have not yet raised the issue with the FA, but are reported to be considering doing so.
One United player in particular made his thoughts clear to the crowd after the incident.
Manchester United won the game 2-1, their first away win of the season, upsetting the form book with it also Arsenal's only away defeat of the campaign.
The Guardian also report if the fan is found guilty, Arsenal would ban them from the stadium for life.