It didn't happen on too many occasions across his unparallelled stint at the top of European football, but there was one time that Sir Alex Ferguson had to admit his side lost to the vastly superior one.
Manchester United headed into the Champions League final in 2011, with an element of home advantage due to the game taking place at Wembley Stadium.
Across the years, both at the new stadium and old one, the legendary Red Devils boss counted success after success as his side dominated the domestic game.
But two years after defeat to Barcelona in Rome, Pep Guardiola's men handed Sir Alex what he would describe following the game as a 3-1 "hiding". "They're the best in Europe, no question about that.
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