London (CNN) -- Two iconic teams, each boasting a history and tradition that spans generations, will go head-to-head for club football's biggest prize on Saturday. Manchester United, the champions of England, face Barcelona, the champions of Spain, at London's famous Wembley Stadium for the right to be crowned Europe's best. These are teams whose exploits inspire emotions and evoke memories that are embedded in the psyche of fans all over the globe. But who will triumph in the UEFA Champions League final -- the culmination of a competition that began with qualifying rounds in June last year -- when the two titans clash in front of 86,000 avid supporters and millions more watching around the world?Manchester United will face Barcelona in the Champions League final at WembleyBoth teams are aiming to become European champions for the fourth timeThe final is a repeat of the 2009 final in Rome, when Barcelona triumphed 2-0UEFA expects viewing figures of over 300 million people worldwide
UEFA has been accused of pricing fans out of attending the match, but the reality is that the ruling body could fill _ three times over because of the support that both teams generate. Meanwhile, _ have long been recognized as the most supported football team in the world. If he leads _ to victory on Saturday, he will become the first manager to win three Champions League titles. The format remained the same until 1992, when _ created the Champions League, involving not only domestic champions but also teams who finished second, third and fourth in their respective leagues.