Basically , you can trade any player for any other player whose overall skill value is one to three points higher .
Also , the game 's computer - arbitrated trading system has a flaw that lets you upgrade your team while seriously deteriorating the talent of other squads .
You can trade any player for any other player whose overall skill value is one to three points higher .
Also , the game 's computer - arbitrated trading system has a flaw that lets you upgrade your team while seriously deteriorating the talent of other squads .