Chael Sonnen: Conor McGregor making a UFC return is a 'silly proposition'
Chael Sonnen goes off about Conor McGregor's decline and why the UFC can't book him going forward.
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WATCH | Conor McGregor spits in the face of fan who taunted him over Khabib Nurmagomedov loss
Former UFC champion Conor McGregor is again in hot water, this time for spitting in the face of a Khabib Nurmagomedov fan.