Manchester City were hoping to kick off a brand new era under Manuel Pellegrini back in 2013 when Pep Guardiola's Bayern Munich brought them back down to earth.
The Bundesliga champions coasted to a 3-1 win at the Etihad and Thomas Muller afterwards likened the movement of City's forwards off the ball to being sat in deckchairs, adding that no forward was allowed to do that for Bayern or Germany.
City would beat Bayern in the reverse fixture that season, but the shine was taken off that by an embarrassing gaffe from Pellegrini whereby he didn't realise the Blues needed to score an extra goal to top the group ahead of their rivals and so took David Silva off and left Sergio Aguero on the bench; City drew Barcelona in the round of 16 and were eliminated, while Bayern made the semi-finals before Guardiola produced "the biggest ****-up of my life as a coach" as Real Madrid beat them 4-0 at the Allianz.