AC Milan and Inter Milan's wins in the Champions League this week has set up a Milan derby in the semi-finals, so now is the perfect time to look back on the last time the pair met in Europe.
Rafael Leao's mesmerising run helped Milan defeat league leaders Napoli on Tuesday night, whilst Inter drew 3-3 with Benfica to go through 5-3 on aggregate on Wednesday.
It means that one of the two clubs who call the San Siro their home will be in the final in June, hopefully in Istanbul, once they've met twice at their ground next month.
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The same scenario played out in 2003, when the Rossoneri went on to beat Juventus on penalties in the final, at Old Trafford, in one of the worst finals in the competition's history.
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However, it was the quarter final two years later that lives longest in the memory, and produced one of the most iconic images in modern football.
Milan topped their group that included Barcelona, whilst Inter were also top, having beaten Werder Bremen by a point, and both were drawn in the top half of the draw.
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Carlo Ancelotti's side had to go through Manchester United in the last 16, whilst Roberto Mancini's team beat Porto over two legs.
That set up the two games at the San Siro, where Inter had amusingly been beaten on away goals by the city rivals two seasons prior.
In the first leg Milan, as home team, won 2-0 with goals from Jaap Stam and Andrei Shevchenko, in a side that also included the likes of Cafu, Paolo Maldini, Alessandro Nesta, Gennaro Gattuso, Kaka. Andrea Pirlo, Clarence Seedorf, Hernan Crespo, Filippo Inzaghi and Rui Costa.
Inter had it all to do in the second leg but they didn't have a bad side either, packed with the likes of Javier Zanetti, Esteban Cambiasso, Juan Sebastian Veron and Adriano.
Shevchenko then put Milan 1-0 up on the 30 minute mark in the 'return' leg, as Ancelotti's side hoped to reach a second final in three years, but the drama was far from starting.
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Cambiasso thought he'd given his side a chance in the 72nd minute with a headed goal, but it was disallowed for a push and, after showing dissent to the referee, he was booked.
The decision didn't go down well with the Nerazzurri supporters, who set off flares and threw them, along with bottles and even umbrellas, onto the pitch, behind Dida's goal.
As chaos rained down from the stands ref Markus Merk delayed play for 20 minutes. The delay birthed one of the most infamous pictures in football as Rui Costa and Marco Materazzi stood, the defender leaning on his opponents shoulder, watching the mayhem.
After 20 minutes the match seemed set to go ahead and Merk allowed the game to restart only for a firework to be thrown on the pitch moments later and hit Dida on the shoulder.
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At that point the referee had no choice but to abandon the game and send the players back to the changing rooms with the stadium no longer a safe place for the 'away' team.
Ancelotti's team were awarded the game meaning they won the second leg 3-0 and the tie 5-0!
Inter were made to play their next four home European fixtures behind closed doors as punishment for failing to control their fans.
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Milan then beat PSV in the semis and were favourites against Liverpool in the final, is Istanbul, with the English side having finished the Premier League season outside the top four.
Of course, we all know what happened next, with Rafa Benitez's men somehow winning on penalties, having been 3-0 down at half time.
The 2005 Champions League campaign really was an iconic one for Milan, fast forward 18 years and they will once again play Inter before the final takes place in Turkey, an omen?!
Featured Image Credit: AlamyTopics: AC Milan, Champions League, Inter Milan, Italy, Serie A, Spotlight