ARSENAL have launched an inquiry after Conor McGregor's antics on the pitch with Bukayo Saka and Declan Rice.
The UFC legend was in the stands for the Gunners' 2-0 Champions League win over PSG last Tuesday.
After the final whistle, McGregor made his way from a VIP area to the pitch.
He then enjoyed a kickabout on the field before being greeted by Saka and Rice.
The Notorious jokingly kicked and grappled the winger as he warned the Irishman to "be careful" while play-fighting.
Reports from The Times say that McGregor did not have permission to go onto the pitch and ignored requests for him to go inside.
Arsenal have launched an investigation into how it happened.
They are considering changing match day rules to see if special arrangement can be made between players and celeb fans.
McGregor got tickets to the game via a third-party site called 1 Access.
The company provide corporate sport packages to the rich and famous.
1 Access are believed to have a box at the Emirates Stadium within an area that players often hang out after matches.
Reports state he was not a guest of Arsenal and the club want to distance themselves from his "brand".