What happened to Tottenham Hotspur side which famously won in the San Siro?
The match was memorable for a terrible Mathieu Flamini tackle, Peter Crouch's late winner, and Joe Jordan offering out Gennaro Gattuso on the touchline, and this game more than ever defined Tottenham's Champions League run in 2010/11.
Even more impressive was that Harry Redknapp's side achieved the win without starting now Real Madrid pair, Luka Modric - a substitute - and Gareth Bale, who was injured and yet to truly establish himself.
Here is a look at the XI which started the fixture...
Tottenham's Heurelho Gomes celebrates during the game
Gomes eventually frustrated manager Harry Redknapp in the next round with a clanger against Real Madrid, but he was excellent in Milan.
He made a number of crucial saves to deny both Mario Yepes and Clarence Seedorf who came close to finding the net.
Gomes was phased out of the Spurs first team and at one point dropped to become fourth choice, sent on loan to Hoffenheim before his contract expired.
He has restored his reputation with Watford, helping them win promotion to the Premier League and is an established regular in the top flight.
Tottenham Hotspur's William Gallas (L) and Inter Milan's Antonio Cassano in action
Gallas joined Tottenham at the tail end of his career, making the controversial move to join after spells at both Chelsea and Arsenal.
The Frenchman's performances won over his doubters and his displays against AC Milan were him at his best.
He left the club in 2013 and retired a year after after a season with A-League side Perth Glory.
Michael Dawson of Hull City celebrates
Zlatan Ibrahimovic must be sick of the sight of Michael Dawson.
He shut him out with a clean sheet in Milan in 2011, and earlier this month did the same with Hull City at Old Trafford as the Tigers frustrated Manchester United.
The 33-year-old left Spurs in 2014, and showed with that result against United that he is still capable of doing his former club a favour.
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After signing from Manchester City, Corluka became a regular for Harry Redknapp's Tottenham before his final season.
After being loaned to Bayer Leverkusen he signed permanently for Lokomotiv Moscow in 2012, where he has remained since.
The defender showed at Euro 2016 for Croatia that he has still got it, and has racked up more than 90 appearances for his country.
Tottenham's Benoit Assou Ekotto in action
Benoit Assou-Ekotto's Tottenham career effectively ended when Harry Redknapp was axed, but he hung around through the Andre Villas-Boas era before being paid off in 2015 after Mauricio Pochettino made clear he had no plans for him.
The left-back had a spell on loan at QPR in 2013/14 and is remembered fondly at Spurs, and is now plying his trade for French side Saint-Etienne.
He has a chance to show what he can do on the big stage this week when his side take on Manchester United in the Europa League.
Everton's Aaron Lennon in action with Tottenham's Kyle Walker
Lennon was a key player for Tottenham in the Redknapp era, and even set up the winner in Milan, but his luck ran out under Pochettino.
He was loaned and then sold to Everton after just six months. He has not recaptured his best form at the Toffees and it is questionable whether he ever will get back to being the dynamic player he was in his early years at Spurs.
Memories of the 29-year-old playing for England seem a long time ago.
Rafael van der Vaart
Tottenham's Rafael van der Vaart celebrates scoring
Dutchman Van der Vaart was in his debut season for Spurs in 2010/11 and was truly magnificent, scoring 15 goals in all competitions.
Sadly he only lasted another season, netting 13, before Villas-Boas made the controversial decision to sell him to Hamburg.
His form in Germany trailed off and after a spell with Real Betis, the 34-year-old is playing for Danish side FC Midtjylland.
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Wilson Palacios is one of the players who has had the biggest falls from grace in the past six years.
Tottenham sold him to Stoke City the following summer where he struggled with form and fitness.
After a spell with NASL side Miami last season the 32-year-old Honduran international is currently a free agent.
Tottenham Hotspur's Sandro (L) and Benfica's Enzo Perez in action
The game in Milan was the making of Sandro, and it was one he lived off for several seasons.
An injury in 2013 curtailed his impressive form at the time and he was never the same player, sold to QPR in 2014.
It looks like Tottenham sold high on the 'Beast', with the midfielder inconsistent at QPR and after a loan to West Brom, he finally moved on to Turkish side Antalyaspor this January.
Sunderland's Steven Pienaar looks dejected
Steven Pienaar struggled to make an impact at Tottenham but will remember fondly playing a role in the win in Milan.
He was sold back to Everton in 2012, who kept him around before releasing him this past summer.
Pienaar rejoined former boss David Moyes at Sunderland in the summer, with the 34-year-old making 14 Premier League appearances so far this season.
Peter Crouch is sent off against Real Madrid
Peter Crouch was the hero in Milan, scoring the decisive goal with 10 minutes remaining.
His Champions League adventure ended on a low note though, with the striker sent off in the defeat to Real Madrid in the quarter-finals.
He was sold the following summer to Stoke City where he has been ever since, and at 36, signed a new contract last month.