I don't trust there is an "experience" is an hidden attribute in this game. But I believe that bad players cannot stay in this game for too many seasons. They are eliminated by natural selection. Many of them are now sold to agents and then silently retired (eliminated by T11).

So those old players who can stay in this game may well perform.

My teams extremely rarely keep any age 30+ players. There is none now. Any player who are over 24 years old and is still kept in my team should well perform or process talents which is difficult to be replaced.