Stamina

If you buy a young player, does this attribute change as he gets older?

yes it does.

So is there a way of knowing what its likely to be?

Thanks

it depends on your training schedule. if you focus on aerobic (if i remember correctly) training you will have more gain.

Unless you look in the database or use a scouting editor or something like that then no, depends if you want to cheat or not, i prefer not to.

What you need to rely on is your scout reports when looking at players and your coaching staff for players you have at your own club. They both tell you what they think the potential of a player could be.

Yourself; well look at key attirbutes in young players. High physical and mental stats are normally a sign at an early age, as are key technical areas, depends on what position you're looking for though.