It was one of the biggest shocks in the history of football: two of the biggest clubs in the world lose to the underdogs and Messi and Ronaldo both missed penalties.
Barcelona were the bookies favourite, and most of the world’s favourites, but they found the Blues in formidable form.
…one question has sprung to some people’s minds. Is the Premier League really the best in the world?
The Neapolitans started well with Cavani coming close on at least two occasions. Eventually though, Chelsea got their breakthough.
But all confidence can be smashed to pieces with one strike of the ball as Arsenal are going head to head with Stoke City, a team that have a good defensive record and are top of their game.
But in the end, as usual, United did prevail, and facing a bit of pressure throughout is nothing new in a Champions League tie.
Champions League debutants, Tottenham Hotspur have also been given a challenging tie when they will return to the San Siro for the second time this season