Conor McGregor opens up on UFC relationship

— -- LOS ANGELES -- Truth is, Conor McGregor didn't know that posting a tweet about "retiring young" on April 19 would have the impact it did.

He didn't put a ton of thought into it, says he wasn't mad when he wrote it. It wasn't planned out. He simply wasn't seeing eye-to-eye with the UFC regarding an upcoming three-city press tour and decided to take the conversation a little more ... public.