This kind of teams are obtained by isolation to the market. They don't buy players nor sell players. The players don't retire at a big age (or that age was never reached) so in these teams the players get older but they are still there.
I didn't see this kind of old players; I saw something like this here http://rockingsoccer.com/ro/fotbal/info/team-4807/players He is isolated too but at least he has facilities and he uses them. Pretty old players also here http://rockingsoccer.com/ro/fotbal/info/team-6320/players