Pep Guardiola has overseen two of the greatest teams in European football in the last two decades. His Barcelona side won every competition they entered in the 2008-09 campaign, with the Champions League triumph being the jewel in the crown after beating Manchester United 2-0 in Rome.
But two years later, he outdid himself, and his Barca team were even more mesmerising when they swept to another La Liga title and won the Champions League once more by beating Manchester United 3-1 at Wembley. It was after that game that Sir Alex Ferguson could do little but doff his cap at the victors.
"Nobody's given us a hiding like that but they deserve it. In my time as manager, it's the best team I've faced. I think everyone acknowledges that, and I accept it," he said. Guardiola - who also oversaw a 5-0 victory over Real Madrid that season - never quite scaled the same heights with his Bayern Munich side as Champions League glory evaded them, but his current Manchester City team are now on the brink of winning Europe's biggest prize and completing the treble.
City have swept aside some of the best teams in Europe on their way towards the treble, hammering Arsenal, Liverpool and Manchester United in the Premier League and outclassing RB Leipzig, Bayern Munich and Real Madrid in Europe.
But which of his two teams had the better players? GOAL picks the best combined XI from Guardiola's class of 2011 and his current City squad...