Interesting theory, except all of Fabregas, Pedro, Busquetes, Martinez, and Mata were regulars with the senior NT before the age of 21. The fact is, the current crop of emerging young Spanish players is no where near the previous one in terms of quality. The team that has dominated the world for the past 7 years is not one that is likely to ever be repeated. The reason that there are no U21s with current senior Spanish NT is because they are not nearly good enough to challenge the senior squad. And Hazard was already the highest rated young talent when we bough him, most of us thought that he could become one of the best in the world. He can certainly become better than Juan in the future, but was he better than Juan this past year? Not a chance.