Former Manchester United manager and one of Arsene Wenger’s greatest rivals, Sir Alex Ferguson says Arsenal’s “invincible” season in the 2003/2004 campaign is the biggest achievement in football.

The Scot was speaking in a new documentary on the life of Wenger as Arsenal’s manager due to be released next month.

Arsene Wenger: Invincible is the latest documentary from Amazon Prime and a trailer was released today.

Wenger and Ferguson were foes for almost two decades as the managers of the two most successful clubs in England in that era – Arsenal and Manchester United.

They have since buried the hatchet, according to The Sun.

Ferguson retired as the manager of United in 2013, while Wenger was forced out of Arsenal in 2018.

The Frenchman now works for FIFA and Ferguson agreed to be interviewed for the documentary.

When asked about Arsenal’s unbeaten 2003/2004 season, he said via the report: “The achievements stand above everything else.”

In another part of the released trailer, while speaking about their heated rivalry at the time, the Scot said: “I’m saying to myself: ‘Is he looking for a war?’”

The documentary is expected to be released in Cinemas and on the Amazon Prime streaming platform next month and the trailer suggests it would be one of the best football documentaries ever made.

More must-reads:

TODAY'S BEST
Rams GM shares details about Stetson Bennett’s absence
Perpetual Bulls trade candidate once more hitting the rumor mill
MLB announces host venues for 2026 World Baseball Classic
Knicks marquee trade acquisition could bolt in free agency
Pistons make decision on new president of basketball operations
ESPN and long-time NFL reporter are parting ways
If Lions HC Dan Campbell's assessment of WR is accurate it could mean trouble for opponents
NBA closes investigation into embattled Thunder guard
NFL reporter predicts Cowboys' plan for QB Dak Prescott
Cavaliers make decision on head coach J.B. Bickerstaff’s future
Two young stars get hefty bonuses for making All-NBA teams
Mavericks star duo joins exclusive club with Game 1 win
Mavericks ride 'Luka Magic' on both ends late to win Game 1
Panthers shut out Rangers 3-0 in Eastern Conference Final opener
NBA announces 2023-24 All-NBA teams
Star Padres infielder to miss significant time with shoulder injury
LeBron James, Charles Barkley passionately defend Caitlin Clark from 'petty' haters
Roger Goodell discusses factors for possible 18-game NFL season
Cowboys QB Dak Prescott has intriguing comment on his contract situation
Celtics toying around with surprise Jayson Tatum move in conference finals