With the news breaking that Alistair Overeem has failed his drug test for UFC 146, the question on everyone's mind is this: who should replace Overeem, Cain Velasquez or Frank Mir? Jump into the Debate, and have your say. Agree with someone's comment? Vote for it to make the Debate Highlights section. Disagree with a comment? Reply, and voice your opinion. Happy Debating! Read more MMA news on BleacherReport.