At the beginning of the season i have a multiple formations. I train young players 18/19 year prefferably with multiple positions special skills. So maybe i lose a season and miss a star. When this player is 20 he has special skill and can play multiple positions. After the age of 20 they will get enough training point to level up.

Buying/training and selling players on the auction list will give some money maybe but when i put a player to auction the selling price is way lower than the marketvalue.

I have a few young players wich im hoping that in a few seasons they will be my key players.