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MMA fighters react to Conor McGregor's retirement tweet

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Cerrone: McGregor's retirement a 'ploy to stay relevant' (1:03)

UFC's Donald Cerrone doesn't buy Conor McGregor's retirement and expects him to eventually make a return to the Octagon. (1:03)

Former UFC lightweight and featherweight champion Conor McGregor took to Twitter late Monday night to announce his retirement from mixed martial arts. Whether the decision is final or just a negotiation tactic for his next fight remains to be seen, but social media went abuzz nonetheless.

Here's what fighters are saying about McGregor's post.

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Rousey: 'We'll see how permanent' McGregor's retirement is

Ronda Rousey is skeptical about Conor McGregor's sudden retirement, suggesting that it may not be a permanent retirement from UFC.