These kids get took away to academys at the age of 8 because they've show a little a bit of talent on the ball, they spend the rest of the days getting fed crapy food to keep the wieght down and play on half decent pitches train on the best surface. No wonder they spend half the time injured when they get older and it's gets more physical.
The best kids to get are the ones that are age 13-15 that have been playing grass roots since the age of 7-8, the ones that have played in all sought of weather on all sought of pitches, the ones that ate the foods that made them chubby as they were growing but now look as lean as any player but with stronger bones. These are the clever players, self tought through experience on rough pitches Mud, Gravel, Concrete..Rian ,snow, wind, heat the lot.
Put any premier u14s grassroots team against utd u14s team they would tear utd apart!