Two Clash of Clan accounts under one Game Center account

Solution 1:

How open are you to creating a new Game Center account?

If yes, then follow the steps below:
Steps are taken from http://support.apple.com/kb/HT4314?viewlocale=en_US&locale=en_US

  1. Open the Game Center app
  2. Tap on your email/username and click sign out
  3. Tap on the Create a new account button
  4. Follow the steps on the screen
  5. Sign in to your new GC account and open Clash of Clans
  6. Congrats! Your village should be linked to the new GC account. To test it out, sign in to another device with Clash of Clans and tap on OK/Confirm

If no, well..... * shrug *. IDK what to do.