Ease into it. If he is naturally athletic and good at soccer, he will continue to be. Not much of it matters until they hit puberty. Some kids develop earlier than others from a coordination standpoint. The last thing you want is to burn him out. What I see with my 12 year old is most parents ultimately start doing things that make them feel good vs what is good for their kid. Your son will decide if he likes the sport enough to do what it ultimately takes about 6-7 years from now. Until then, he most likely won’t have the mental maturity so let him have fun, get him a good coach around 10 or 11 and try to remember that youth sports are destroyed by parents thinking their kids are special.