Lauren has admitted that "there was fighting" in training during Arsenal's famous unbeaten season, while opening up on the "big egos" in the dressing room at the time.
Arsenal did not suffer a single Premier League defeat on their way to winning the title in 2004, becoming the only team in top-flight history to complete a full campaign unbeaten.
Arsene Wenger's side played an irresistible brand of football, combining flair and pace with aggression and passion, with Thierry Henry, Patrick Vieira and Sol Campbell forming the spine of the starting XI.
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Despite their unprecedented success, Lauren, who was a regular in Arsenal's squad at right-back, has conceded that there wasn't always a harmonious atmosphere within the 'Invincibles' squad.