Arséne Wenger announced on Friday his plans to leave Arsenal at the end of the season, signalling an end to his 22-year tenure at the club.
He has managed some fine players during his time in North London, but no team of his has ever managed what the squad of 2003/04 achieved.
And while some of the players in that team were genuine world-class players, there are some that can maybe count themselves lucky to be talked about in such elite company.
Who were the heroes of Highbury, and where did they end up?
GK - Jens Lehmann
Brought in to replace the outgoing David Seaman at the beginning of the season, the German had turned-out more than a hundred times for both Schalke and Borussia Dortmund before moving to the Premier League.
Lehmann was ever-present in the league for Wenger's men, and though he could be a little erratic at times, he was an integral part of the defence that allowed no team to beat them.
After a good time with Arsenal, he returned to Germany in 2008 to join Stuttgart, rejoining the Gunners in 2011 and playing one game to help his former club with their goalkeeping injury crisis.
LB - Ashley Cole
Gael Clichy had joined in the summer, but Cole was in his prime.
A regular starter during that season, his reputation among the Arsenal faithful was tarnished by a protracted transfer saga in 2006 when he moved to Chelsea after attacking his former club in an autobiography.
Cole has had a distinguished career for both club and country, and still isn't done - he still plays regularly for LA Galaxy at the grand age of 37.
CB - Sol Campbell
he was another player mired in controversy, but that was later on with his infamous 1-game spell with Notts County.
At Arsenal, he overcame the early stigma that comes with arriving from rivals Spurs to become one of their finest defenders who had an excellent season in 2003/04.
He later scored Arsenal's only goal in the 2-1 Champions League final loss against Barcelona in 2006.
Nowadays he is more focused on the managerial side of the game after a failed attempt to get into politics, and was recently turned down for the Oxford United job, after which he described himself as "one of the greatest minds in football."
Okay then, Sol, we'll believe it when we see it.
CB - Kolo Touré
The eldest of the Touré brothers had a stellar second season at Highbury, fully replacing Martin Keown whose influence was fading with age.
He appeared in all league games but one, starting 36 of them, forming an impassible partnership with Campbell at the back.
Kolo enjoyed a prolific Premier League career, joining brother Yaya at Manchester City in 2009 and having a three-year spell at Liverpool, before a year in the SPFL with Celtic, where he enjoyed another unbeaten league season with the Hoops before retiring.
he was one of the finest central defenders in the Premier League-era.
RB - Lauren
Lauren was a cult favourite at Arsenal. the Cameroonian-born defender spent his career in Spain where he grew-up, before making the move to the Premier League in 2000.
Lauren completed the settled back-four in this season that only shipped 26 goals, providing part of the solid base upon which Wenger built his 'invincible' team.
He later moved on to Portsmouth before retiring in 2010 back in Spain with Córdoba, and now makes appearances on Sky Sports as a La Liga pundit.
LM - Robert Pirés
The Frenchman made almost 200 appearances for the Gunners and is regarded by fans as one of the finest players ever to play for the club.
Pirés was one of the chief threats going forward in 2003/04, finishing the season as the second-highest scorer in the Arsenal team with 14 including an incredible wonder-strike against Liverpool.
He later moved to Villarreal before turning out briefly for Aston Villa and Indian Super League side Goa and has since returned to Arsenal to become a first-team coach.
CM - Gilberto Silva
Like Touré, Gilberto was in his second season with Arsenal when he came into his own after arriving from his homeland.
An unfashionable player, the Brazilian was tigerish in the tackle which more than made up for his often-erratic passing, and formed part of the impenetrable wall of central midfield.
Gilberto remains one of the finest defensive midfielders to have played in the Premier League, retiring in 2013 after a return to Brazil via a spell in Greece with Panathanaikos.
CM - Patrick Vieira
The only disappointment for Gilberto is that he was overshadowed by his partner in midfield, club captain and one of the best midfielders ever.
Vieira and the Brazilian controlled the midfield in virtually every game in which they played together, and the Frenchman provided the core of the team that was so dominant in 2003/04.
He had an extremely successful career, playing for both Milan clubs as well as spells with Juventus and Manchester City.
Now the manager of the New York City FC franchise in MLS, he is being linked as an outsider to replace Wenger as Arsenal boss at the end of the season, a move that would undoubtedly be extremely popular among the Gunners faithful.
RM - Fredrik Ljungberg
The Swede completed the strong Arsenal midfield, scoring four goals and providing a vital creative spark in the Gunners' attacking line.
'Freddie' made the second-fewest starts of the 11 on this list, struggling with injuries and having to share a starting berth with Brazilian Edu who was rising to prominence after a shaky start to life at Highbury.
Still, Ljungberg was important to the way Wenger asked his team to play and rightfully deserves his place in the Arsenal history books.
CF - Dennis Bergkamp
The 'non-flying Dutchman' was in the twilight of his incredible Arsenal career in 2003/04, but was still important to their perfect league campaign.
Bergkamp will always be remembered at Arsenal for his incredible goal against Newcastle United in 2002, but still contributed four important league goals in the 'invincible' season and pushed the team forward with his unimpeachable reputation as one of the finest forwards around.
He retired from Arsenal in 2006, and has ruled out a move into management, although he has spent time as an assistant coach with Ajax.
His nephew Roland plays for Sparta Rotterdam.
ST - Thierry Henry
The spearhead of the attack and Arsenal's best player, Henry scored 30 league goals on the way to being named PFA Players' Player of the Year and FWA Writer's Footballer of the Year.
he was Arsenal's all-time record goalscorer manager 174 for the club before moving-on to Barcelona and New York Red Bulls, from whom he returned on loan to the Emirates during the MLS off-season. he scored the only goal of the game in his historic second club-debut in the FA Cup.
Nowadays, Henry is a regular pundit on Sky Sports' football coverage and is also the second assistant manager of the Belgium national team under Roberto Martinez.
Henry is one of the best to have played in the Premier League, and is one of Arsenal's best players ever.
