Hello Bence. You can join to one of our clans. If you want to build I am sorry to say no , my vote will be no because you have been in the enemy side for a long time. If you want to join some of our clans you are welcome. Me personally will invite you to my clan if you wish . I am a person that like giving second opportunities and I have respect for my enemies on the game . I had changed my side once too , so you won't have a problem in my clan for that reason
Dave