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Mayweather vs. McGregor ain't even close to happening ... so says Dana White.

With the UFC honcho recently vowing to try to make it happen, we asked Dana if there's been any movement -- but the answer ain't what we were hoping for.

Then again, we probably shouldn't expect much until after Conor's baby is born -- Dana has previously said they have plans to meet up after McGregor's girlfriend gives birth.

We also talked to White about Ronda Rousey -- and he reminds us that she hasn't officially retired yet.