I see
But no one wants to keep a player for 9 seasons. I just got to rank 2 and now I see that I have to replace at least half of my players. So it means when you advance a level every season then in every 2 seasons you have to replace all your players. 18 year olds are too expensive to buy for me atm. So I have to look for older ones. So what would be the optimum age to buy if you know that you will replace your player in 2 years time