the focus is completely on making the players reach their max potential , which means making them try new positions , new systems etc for example Joo Mrio played CB many times to practice his distribution , winger to improve in 1 vs 1 s , even though everyone knows his best position is a centre midfield . This gives worse results at youth level like this season in youth league Sporting has one of the most talented squads in the competition but is struggling to qualify , but produces footballers that are far more prepared and adabtable in the future . This is what matters , you want a great footballer at 20 yo , not 15 . At a young age all you need is talent and inate capabilities , all the rest can be taught and improved upon .