UFC Champ Charles Oliveira Predicts Conor McGregor Will Knock Out Poirier

Conor McGregor vs. Charles Oliveira, coming soon to a UFC card ... 'cause the UFC lightweight champ says "The Notorious" will KO Dustin Poirier this weekend -- and then fight "do Bronx."

TMZ Sports caught up with 31-year-old Oliveira in Las Vegas -- only days before the highly anticipated McGregor-Poirier trilogy fight -- and we asked ... who ya got??

Here's our conversation with the champ and his translator.

Who are you picking for this fight? Who do you think is gonna win it?
Conor.

The champ is picking Conor?
Yeah, Conor Mcgregor.

By KO, submission?
By knockout.

You’re next fight, you want it to be Conor?
Yes, Conor McGregor.

This is important 'cause Dana White recently said the winner of the main event at UFC 264 will face Charles ... so he's got a lot of skin in the game.

Of course, McGregor beat Poirier when they fought in 2014 ... and DP KO'd Conor in the January 2021 rematch.