Originally Posted by
Tactician
By the repetitive training of 5 star players and using rest and healing packs to recover the players' condition. This may turn out to be expensive if the players are not fast trainers or are far from the next star.
By buying scout players from the scouts' list.
You can get six star players more easily by buying 5 star players that are very close (only need a few skill points) to promotion to the next star.
Keep into consideration that you can still win any competition with a 5 star team. What you see is visual quality, and teams of lower quality may perform better on pitch if the right tactics are used.