PSG, while they lost the Club World Cup final to Chelsea, still finished with the Quadruple, as they won the Champions League, Ligue 1, Coupe de France and French Super Cup titles.
Speaking directly to the PSG support, Al-Khelaifi said: "Dear friends, as the most unforgettable season comes to a close, I want to say to the entire Paris Saint-Germain family: thank you.
"Looking back today, it's easy to forget how challenging this season has been, across so many competitions and countries, at the highest levels and with the most difficult groups and routes. But thanks to our collective spirit – fighting every day for the Club and for each other – this season has been the greatest in Paris Saint-Germain's history.
"Winning our magnificent first UEFA Champions League trophy – with the second-youngest team in the competition’s history and the youngest in Paris Saint-Germain’s history, playing in a way that captivated commentators across the world – will forever remain etched in the annals of football.
"Even more so when you consider our titles in Ligue 1, Coupe de France and Trophée des Champions – along with extraordinary results in handball, judo, women’s football, youth football, eSports, and with 26 athletes at the Paris Olympics.
"In the United States last month, we naturally wanted to finish as World Champions , after another memorable campaign beating some of the biggest clubs in the world, but after such a long season we can be truly proud of what our players and staff have achieved as runners-up on the world stage.
"Everyone has contributed to these successes – all our past presidents, players, coaches, sporting directors, and staff members; and today I especially thank our extraordinary football department and employees, our partners, our incredible coach Luis Enrique, and our soldiers – our players – who defend our institution and fight for the Club every day and every match, on and off the pitch."
Best fans in the world
The president continued: "I'll never forget our fans either: in Paris, throughout France, and around the world—we have the best fans in the world. They followed the team everywhere—in every city and town we visited, in the stadiums and on the streets. They never stopped singing, never stopped believing, and they pushed the team—win or lose—until the last minute.
"I am so proud that our fans are an example to everyone – and the celebrations we experienced together on the Champs-Élysées and at the Parc des Princes in June will stay with us forever.
"However, our project isn't just about winning today , tomorrow, or short-term success—we're building something strong and lasting, for the long haul. We still have a lot to do, and as the song says, "après tant d'années de galères et de combats" (translated: after so many years of hardship and struggle), we'll continue to work harder and harder every day.
"Always humble, always guided by the collective, where the true superstar is the team —with sporting values and pride in the Paris Saint-Germain colors and representing France in our hearts.
"Thank you for your support during this memorable season, and here's to many more future successes for Paris Saint-Germain. Here's to Paris."