Barcelona 2008-2011
We’re going a little more modern here. Manchester United was moving on from Alex Ferguson when Pep Guardiola came along. Pep built the team around Messi, Xavi, and Inesta and soon the team was unstoppable. This came after selling Ronaldinho and Deco — a huge gamble for Barcelona.
AC Milan 1988
This Italian club never slowed down when they were in their zone. Milan barely flinched as they breezed their way through the 88 – 89 Euro Cup. Maldini, Baresi, and also Costacurta made up some of the best defensive players in the game at the time — making AC Milan tough to score on.