Im actually in my second league and I will get promoted to lvl3 league.

I have old players that still are 2 stars, some are 4 stars too, but the Most of my squad are still 3 stars, cause the youngers ones were learning new habilities and roles, so I spent all points in it. they have ability and new rol now, they cost a little more, but maybe they could have been 4 star instead of special hability

So my question about stars is, whats the diference between a 3 star and a 2 star player? the cost? the quality?

a player who is 3 stars (15) by the start of the new season will be 2star (10???) or he will be 2 star (15) ?

I did a mistake learning habilities?