You're welcome. Exactly, if their average quality is higher than any of your current 14 highest rated players, they're going to take one of the 14 spots and thus will be included in the draw calculation.
Just make sure you have yough low quality players in your squad and train them special ability or new role so they don't increase their skills. Sell everyone you don't intend to use the next season before the current season ends and you should be good to go.