both of them :D
if we talk about U21 team.... cause you can train a player to a good level also with an all star potential . (We are talking of P and SG obviously, for the big men at least you need a superstar, but also one low with no blocking skill is good)
for the major the potential is something too important , so ..5 ball skills ,best potential :D
Pay attention that ..right now .. all these condition are not respected, cause we work using what we have and it can also be something inferior...