I'm only lvl 1 so I'll use this example - I buy 20 year old with 5* for a million (I haven't seen anyone that young and with that quality under 800k) and I can use him for like 3 seasons before he gets useless while I could buy 5* 30 year old for a 150k and he still has 3 years before retirement...it's a win win for oldie...only good thing is that I can get decent amount of money from selling that youngster,but hell I could get 100k for that veteran before he retires