i think an important step is to ensure there is "future" after the sporting career. In UK, Europe, retired players go into management, coaching or pundits or even some, retire as millionaires.
we need as well to develop the supporting infrastructure so that there are career opportunities after professional football. Esp since as a footballer here in Singapore or SEA, u r unlikely to be paid enough to retire after playing.
if there are feasible futures - it will help tremendously to ease concerns and anxiety.
Another factor - NS. 18 - 20 you take away 2 years of their golden years - where budding players could either lose interest, lose skills or kenna injured.