That can happen whend you are near the top of your server.
If there isen't enought teams in one level to make a league or a Cl draw, the highest Q teams of a level below will be promoted to fill the bank spots.
If that happens in league you can buy scouts with 7*. In Cl the prize money will be higher, If you were playing a level 12 CL.
Next season you play again in level 13, or will be promoted again in a level 14 league, Cl or both.