In real football, it is possible that players younger than 18 can turn professional, like in the barclays premier league, Wayne Rooney, James Milner and Jack Wilshere are notable examples that have played in the premier league at the age of 16. Aaron Ramsey is another player that is another good example, albeit for cardiff in the championship. There will of been many players that also made league appearances at the age of 17 too, such as Theo Walcott and Alex Oxlade-Chamberlain.
You know what I say, Top Eleven, Give us the 16/17 year old players...
PROBABILITY OF PLAYERS AGE:
Youth Building Built----------18------- 17-------16-----
Target Shot-----------------90%-----10%------0%----
Junior Pitch------------------80%-----15%------5%----
Mini Camp-------------------70%------20%-----10%---
Football School--------------60%------25%-----15%---
Youth Academy--------------50%------30%-----20%---
What you think?