The Notorious was on the Emirates Stadium pitch after the Gunners beat PSG in the Champions League.
Conor McGregor was in the headlines in midweek but not in the Octagon after getting on a football pitch and sparring with Arsenal's Bukayo Saka - but the Gunners have now made a decision following that episode.
Arsenal were in Champions League action on Tuesday evening at the Emirates Stadium where they took on Paris Saint Germain in the new look league stage of the competition.
Mikel Arteta's side won 2-0 thanks to goals from Kai Havertz and Saka as they picked up their first win of the season in Europe.
Arsenal followed it up by coming from behind to beat Southampton 3-1 in the Premier League on Saturday.
Cameron Archer gave the Saints a shock lead after the break, but the Gunners responded through Havertz, Gabriel Martinelli and Saka to wrestle back control and claim all three points in their last game before the October international break.
On Tuesday night, UFC star McGregor was among those stars who attended the Champions League encounter in North London.
The Notorious is one of the most recognisable faces associated with the UFC thanks to his success in MMA and his loud personality.
But the Irishman has not fought in the UFC since 2021 when he lost the second of his bouts against Dustin Poirier.
McGregor had been due to fight Michael Chandler earlier this year at UFC 303, but this was cancelled in mid-June after the Notorious suffered a broken toe.
The 36-year-old has also made his Hollywood debut, having appeared alongside Jake Gyllenhaal in 2022 in a remake of the 1989 movie Road House, which originally starred the late Patrick Swayze.
In midweek, McGregor was filmed after the game on the pitch at the Emirates Stadium with Declan Rice and Saka, having a kickabout with the duo.
What caught the attentions of many was McGregor appearing to engage in a play-fight with Gunners winger Saka, also striking the England man with a kick to the back of his leg, which caused the winger to step away before McGregor jokingly apologised to the 23-year-old.
Though the incident may have been in good spirits and well intentioned, it appears Arsenal are now taking steps to make sure anything similar does not happen again.
According to The Times, McGregor had entered the pitch without Arsenal's permission and was asked to go back in the stadium, but concern remains about the MMA fighter's antics on the pitch.
And the Gunners are now reported to be looking over the arrangement where players mingle with corporate guests after games, as well as distance themselves from McGregor and his, at times, controversial background.