Young players have a narrow window of opportunity in terms of health, strength, and above all ATTITUDE towards the business of football. If a players first 4 years are f***ed due to multiple player,coaching and scheme turnovers, they are far less likely to develop later. It's like a child's development. The early development is key to where their initial attitudes toward adversity comes from. I firmly believe that many players enter the league that simply go to the wrong teams. Timing and the players next to you mean so much.