Manchester United will meet Real Madrid Saturday afternoon in the  Guinness International Champions Cup at Michigan Stadium. Even though this is a friendly between the two clubs, tickets at “The Big House” sold out within a day, as both sides boast avid fan bases throughout the country. If United avoid losing in regulation, they will advance to Monday’s Final in Miami.

Louis van Gaal’s reign of Manchester United has started well this summer, to say the least; the English giants defeated the Los Angeles Galaxy 7-0 before holding off Roma 3-2 and Inter on penalties in their previous tour games. United have enjoyed the presence of first-team regulars, including potential captain Wayne Rooney, who recently played for England at the World Cup. But even with the success they’ve had here the last few weeks, it’ll be their performances in the first months of the upcoming Premier League that determines if last season was an aberration.

Real Madrid are coming off their record 10th European Cup title, but will miss Cristiano Ronaldo, the most recent FIFA Ballon d’Or winner and former United player. The Spanish club have struggled in their first two matches of this tournament, losing to Inter on penalties and to Roma in regulation. The Spanish domestic league (commonly called “La Liga”) starts later in the month than the Premier League, but Real are competing in both the Spanish and UEFA Super Cups once they return to Europe. Real’s record of signing world-class players has continued in 2014, with World Cup stars James Rodriguez and Toni Kroos joining in the last few weeks.

With the sell-out expected in Ann Arbor, American soccer fans can look to this as one more sign that the sport is continuing to grow its popularity in the U.S. Two of the most recognizable brands not just in soccer, but in all of sports, competing in one of the largest stadiums in the world. For the fans lucky enough to attend Saturday’s match, it’s an experience they won’t forget.