Chelsea's social media team got the drill. The Blues are back at San Siro for the first time since 2010, but that stretches back to 1999 for a game against AC Milan.
Even the younger fans will recall the game, the scene of one of the club's most famous goals, and retrospectively, now one of the most common chants too. As Dennis Wise was sent through on goal, scoring with a brilliant finish with less than 15 minutes to go, Chelsea fans were sent into pandemonium, and they haven't stopped talking about it.
Be it in the away end at Turf Moor or more aptly from the Shed End in a Champions League game, Blues fans always sing about that moment, and now, on the day of a huge test and a brilliant away occasion in Europe, the world is once again being reminded of Wise's finish.
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As fans journey out to Italy ahead of the game, looking to take advantage of one of the best away days this season will offer, they have been taking in the sights of the Milan Cathedral and making the most of all the Peroni or Birra Moretti they can get.
Along the way, they're dropping reminders to their hosts of the past, too. As well as being seen chanting about Mateo Kovacic, who is returning to his former stadium having played for Inter Milan between 2013 and 2015, Wises' name has also been sung repeatedly.
Following on from Chelsea's video of the Wise goal, captioned: "You know the words!," Chelsea fans are letting their feelings be known, singing the lyrics: "Oh Dennis Wise, he scored a ******* great goal, in San Siro, with 10 minutes to go."
On top of this, passengers on a certain flight out to Milan will have gotten a nice surprise leaving Gatwick Airport. Whilst being sent to their boarding gate, the announcement system said: "With myself being a big Chelsea fan I'd like to say 'up the Chels'."
After beating the Italians 3-0 at Stamford Bridge last week and following that win with a resounding victory over Wolves three days later, the feeling heading into the massive fixture is much better than it was several weeks ago when the club was left with just one point from two group matches, staring down the barrel at group stage elimination.
Now, after goals from Pierre-Emerick Aubameyang, Reece James and Wesley Fofana, Graham Potter's side have less pressure to win at San Siro, which has been a fortress for for Stefano Pioli's men. With the victory at home ensuring that Chelsea have a superior head-to-head going into the game, if the Blues can take a draw from the away match tonight then they will have the upper hand on their opponents. Should that be the case then Milan would have to better Chelsea's points total due to European group stages favouring head-to-head rather than goal difference.
If Chelsea can channel the skills and memories of Wise back at San Siro, they will be nicely set-up.
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