G: That's at the heart of the Barcelona model and runs all the way through the club, doesn't it? When you beat Madrid, eight of the starting XI were youth-team products and all three finalists in this year's Ballon d'Or were too – Lionel Messi, Andrés Iniesta and you.
X: Some youth academies worry about winning, we worry about education. You see a kid who lifts his head up, who plays the pass first time, pum, and you think, 'Yep, he'll do.' Bring him in, coach him. Our model was imposed by [Johan] Cruyff; it's an Ajax model. It's all about rondos [piggy in the middle]. Rondo, rondo, rondo. Every. Single. Day. It's the best exercise there is. You learn responsibility and not to lose the ball. If you lose the ball, you go in the middle. Pum-pum-pum-pum, always one touch. If you go in the middle, it's humiliating, the rest applaud and laugh at you.