If PSG win the Champions League trophy on Saturday night, there could be chaos around the site. Stade Roland Garros is less than a kilometre away from PSG's home ground, and organisers of the tennis tournament have brought in extra security to help with the madness.
Tens of thousands of fans will head to the Parc des Princes on Saturday night to watch them take on Inter Milan. Their is a viewing at the stadium, with the fixture taking place in Munich. The game clashes with Novak Djokovic's night session match mon the French Open's main stadium court, and the tournament director has confirmed that police will be rolled out around the grounds.
"All around Roland Garros there will be police department teams that will be rolled out. Also safety arrangements will be set up. It was well set up," Amelie Mauresmo said ahead of the Champions League final.
"Also outside the police department and prefecture have done everything, scheduled everything. They're used to that kind of event."
Fans inside at Roland Garros won't be stopped from watching the match on their own devices, and the tournament boss isn't expecting an "uproar" inside her own grounds.
She added: "We're very cautious. We have security teams. That's not merely for someone that will watch a football match.
"We can't prohibit people to watch their telephone and to follow the football match simultaneously. There won't be 10, 20 goals. If once or twice we'll have a bit of an uproar, it's going to be fine."

While it may not be chaotic inside Court Philippe-Chatrier and the rest of the French Open site, things will no doubt get lively if PSG win the Champions League for the first time, causing disruption to Djokovic's night session match against Filip Misolic.
Fireworks had already started going off around 6pm French time, with the loud bangs heard during Cameron Norrie's clash with fellow Brit Jacob Fearnley. And there will be plenty of noise in the 16th arrondissement as fans head to the Parc des Princes, then spill out onto the streets.
Mauresmo has also confirmed special public transport adjustments had been made, with the metro Line 9 opening to help those coming in and out of the area.
"It was supposed to be closed. It's important for them and us. It's an important piece of news, a good one, for the people coming to the park, but also to those coming here," she explained.
The tournament has also taken measures to reorganise travel arrangements for those working on the grounds.
Meanwhile, bars in the immediate vicinity of the Parc des Princes won't be able to show the game on their TV screens to avoid even more anarchy in the area.
Most of the players competing at the French Open will also be tuning in. But Djokovic, who said he planned to support PSG, when his third-round match was scheduled to play at 8.15pm local time - 45 minutes before kickoff.
"It's going to be PSG that I will support. I will definitely watch it if I'm not playing night session. Yeah, that will be nice. FYI, Roland Garros schedule..." he said on Thursday night.
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