Top 5 European clubs of the 21st century 

Real Madrid v Liverpool - UEFA Champions League Final Previews
Real Madrid v Liverpool - UEFA Champions League Final Previews

#4 Manchester United (England)

Manchester United v Swansea City - Premier League
Manchester United v Swansea City - Premier League

Given their recent travails, at first glance, it might seem a tad suspicious to name Manchester United as one of the best five clubs of the 21st century.

However, it must be noted that there have been 19 years so far in the 21st century and for 13 of those, the Red Devils were nothing short of brilliant and their woeful displays in the last five years cannot erase their brilliance from previous ones.

Manchester United entered the 21st century firmly established as the premier club in England and they ended the previous century in perfect fashion by becoming the first English side to win a continental treble in 1999 and they continued in that vein into the early noughties.

Under Sir Alex Ferguson's management, seasoned campaigners like Paul Scholes, David Beckham, Ryan Giggs, and Rio Ferdinand held sway in the land, while youngsters like Cristiano Ronaldo and Wayne Rooney blossomed into global popularity.

The last 13 years of Sir Alex Ferguson's Manchester United tenure brought 18 trophies including a three-peat in the Premier League between 2007 and 2009 as well as a third Champions League trophy in 2008.

In the intervening six years since he departed, the club has won five trophies, including a maiden Europa League in 2016.

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