Top server is the max. level of the server, maybe, 1- or you started the 1st season in a new server, or 2- you have added as a friends lots of teams of your level.

If you don't want play with them, delete them as a friends at the end of the season, and when new season start, the day 3 when sure you don't will play with your friends, add them again, to send and recive the gifts of these mates.