I'm just wondering if anyone is as sad as I am and keeps a (rough) tally of how many current wonderkids they have had at their club, at one time? Not former wonderkids, as there would likely be many, but players that are all wonderkids at one point in time.
My previous record was seven, on FM 2007. Believe it or not, but I currently have 19 wonderkids, either in my first team squad, in the reserves, or out on loan!
A player has to have a CA of roughly 150, though that number is certainly not exact. For instance, I have wonderkids that are 140-odd, and players that aren't classed as wonderkids, yet, that are 150-odd, but the rule is, in my experience, generally true. A player also has to be under-21, as well.
On another note, if you arrange lots of friendlies during the season for your reserves, and possibly U18's, and particularly if you have a large reserve team squad, this might be worth doing. I created a bookmark folder entitled, "Friendly Clubs", and looked through all of the clubs in leagues that I don't have running (I have England, Scotland, France, Spain, Italy, Germany, Holland, Portugal, Brazil, Argentina, and Mexico, as full leagues) and bookmarked them. I also included an abbreviation of the name of the country that they reside in, so that the clubs from the same country are all listed together, alphabetically.
Then, when you attempt to arrange a friendly, do it in the normal way, by choosing a date and selecting "Choose Club", then select "Choose Other". Rather than searching through clubs, looking for one with lots of real players, you can simply click on the bookmark tab and select the option that contains all of the clubs that have real players. It makes the job much, much easier, believe me.
I have so many youngsters in my reserve team, so I usually arrange a friendly every third day (so two days in between), or sometimes even every second day (one day in between). There is often only one or two games per month in the English reverse leagues, so I tend to play far more friendlies than league matches.