UFC

Floyd Mayweather will be staring down several racks of cash hours after the fight with Conor McGregor -- win or lose -- 'cause clubs are throwing big bucks to get him to show his mug Saturday night.

TMZ Sports spoke with several Vegas promoters and the numbers are insane. One of them told us he'll pay Floyd $30k just to walk through his establishment ... for only 10 minutes! Another doubled that, offering $60k for a 30-minute pool party appearance on Sunday.

Sources close to Floyd tell us he already has 3 other offers -- for $50k, $80k and $100k. We're told the offers would still stand even if he loses because people would still want to chat him up.

Unfortunately for all those promoters, Floyd hasn't agreed to any of it. But we're told he WILL make some appearances besides his Girl Collection strip club party. If he accepts everything on the table -- which is logistically possible -- he could pocket a total of $320,000.

UFC star Kevin Lee says Conor McGregor's gonna have to go coffin shopping if they ever square off ... 'cause he's comin' for the Notorious' belt after UFC 216 ... and says it ain't gonna be pretty.

TMZ Sports spoke with Lee about his plans after taking on Tony Ferguson for the interim lightweight title -- which he sees as the hardest fight in the division, not Conor.

The Motown Phenom says he's been doing all of Conor's hard work -- which makes him the REAL champ -- and he's not afraid to take on McGregor.

Lee makes his point clear by saying if he were to cross paths with Conor in the gym, he'd be in serious trouble:

Lookin' to make some extra cash during the Floyd vs. Conor fight?? BET ON THE BOOBS ... 'cause Demi Lovato's twins highlight the fight's list of prop bets!!

The cyber-gambling site BetOnline.ag -- one of the biggest gambling sites on the net -- is offering up a bet on whether Demi will show cleavage or cover up the goods during "The Star-Spangled Banner" before the fight.

As of right now ... the odds are definitely pro-boob:

Yes +350 (bet $100 to win $350)

No -500 (bet $500 to win $100)

There's more (not as sexy) bets ... like over/under 1 min 52 seconds for her rendition of the anthem and whether the Biebs and Lil Wayne will make an appearance.

Dominick Cruz is shutting up all the Mayweather vs. McGregor haters at the 11th hour ... saying MayMac is gonna spark an "amazing" change for the UFC and boxing.

MORE SUPERFIGHTS!!

Dom admits a Conor win would be best for UFC superstars like himself ... but tells TMZ Sports we should expect a lot of crossover in the fight game no matter the outcome.

"Either way, this fight is gonna create that type of chemistry between the two combat sports," Cruz said. "I think we're gonna see more superfights from here."

One catch -- Dom told us it's just gonna be MMA fighters trying boxing cause, "I don't think any boxer on Earth is that dumb to come over to us."

Burn.

Conor McGregor was VERY excited about the weigh ... at least judging by the bulge in his pants.

The UFC superstar weighed in at 153 pounds ... while parts of him were hanging off the scale.

Floyd weighed in at 149.5 ... some room to grow.

Congrats to Calvin Klein, the maker of McGregor's underwear, for containing the beast.

Irish eyes are smiling.

Floyd and Conor now have just one date left -- when they square off in Vegas on Saturday night for the super fight.

Ronda Rousey won't be ringside for McGregor vs. Mayweather ... 'CAUSE SHE'LL BE GETTING MARRIED!

Dana White revealed that Ronda will be tying the knot with longtime boyfriend Travis Browne on Saturday. The two got engaged back in April.

White told Rich Eisen he was invited to the wedding but obviously won't be able to attend. Ronda previously announced on "Kelly and Ryan" that the wedding will go down in Hawaii.

As for Ronda's career, Dana says she hasn't retired -- but says she's in a great place and super happy.

Tyron Woodley ain't convinced Jon Jones took steroids ... but if he did and has to sit out 4 YEARS, Tyron says Jon would still come back and DOMINATE.

That's right -- Woodley told us Jones is such a boss, he could reclaim his belt even if he's benched through his prime.

"Jon Jones is the only fighter on the roster that it wouldn't be over for him. He's 3 or 4 years ahead of the curb right now, for the (205 pound) division."

"After Daniel Cormier, tell me one fighter who's gonna compete with Jon Jones."

FYI, Dana White estimates Jones will get suspended for his test failure ... but JJ could serve less time (or no time) based on how his appeal goes.

Conor McGregor whispered some words of psychological warfare to Floyd Mayweather during their final face off on Wednesday ... and now we know exactly what he said.

Take a look ... Conor leans in and takes a few quiet, private shots at Floyd.

Floyd responds, "You're a comedian."

Despite the trash talk -- the two men exchange final pleasantries ... quietly wishing each other good luck.

And get this ... the UFC has released new footage from Conor's sparring sessions with Paulie Malignaggi showing the Irish superstar putting a beating on the former champ.

Paulie is now saying he was spying for Floyd the entire time. Hard to spy from the canvas though.

Floyd Mayweather just stepped up the mind games big-time with Conor McGregor -- claiming he and Paulie Malignaggi plotted to have Paulie spy on Conor's camp from the beginning!

"Paulie has always been my friend," Mayweather told FightHype.com ... as Paulie paid a friendly visit to Floyd's Vegas boxing gym. That's when he revealed the spy plot ...

"My friend called me and said, ‘Floyd, do you want me to go to (Conor’s) camp?’ I said, ‘Abso-f*ckin’-lutely.' ... Paulie, thank you for going over there like I asked you to do."

As Floyd talks, Paulie repeatedly says "suckas" -- a shot at McGregor ... and maybe the public for being duped.

Remember ... Paulie was brought into Conor's camp to be a sparring partner -- but bounced after training footage he said made him look bad got released.

Now ... Floyd's saying Paulie's been in his corner all along -- and that his boy is gonna tell him all about Conor's game plan.

“Me and Paulie gonna stay at the house and talk about strategy, we gonna talk about EVERYTHING."

Is he joking? Maybe. Maybe not.

Dana White says he REALLY hopes Jon Jones' positive drug test is a mistake and he'll be exonerated by the B sample ... but he says that's "highly unlikely."

White appeared on the "TMZ Sports" TV show (airs weeknights on FS1) and said he still hasn't personally spoken with Jones since he learned the UFC superstar tested positive for steroids.

White said he was disappointed in Jones -- since the guy is so insanely gifted, he doesn't need banned substances to dominate in the UFC.

"He doesn't need it!!!! He doesn't need to do that! He's that talented and that gifted that he doesn't need drugs."

Dana White says Floyd Mayweather is full of crap -- and his allegations that Conor McGregor is using illegal tactics to cut weight for the fight are pure fiction.

Early Thursday morning, Mayweather told Ariel Helwani that he had information from a "strong source" that Conor had used 7 IV bags to stay hydrated for Saturday's big fight.

"You know, with the Nevada (Athletic) Commission, that's illegal," Mayweather said.

To be fair, Floyd kept using the words "rumor" and "allegedly" -- but he's a media master and he knows exactly what he's doing by putting that out there.

So, we called White -- who told TMZ Sports there's NOTHING true about Mayweather's claims. Period.

In fact, White pointed to reports that it was FLOYD who was caught up in IV drama before the Manny Pacquiao fight. USADA ultimately said the IV was administered to Floyd before that fight was approved.

But the bottom line ... White says there's no issue with McGregor because he's not using an IV.

Floyd Mayweather Sr. has his son's back in his beef with Justin Bieber -- saying the pop star unfairly kicked Floyd to the curb just because he found God.

As we previously reported, Floyd Jr. is furious with his former friend -- who's been distancing himself after some counseling from his church. Bieber even decided to unfollow Floyd on Instagram as part of a bigger plan to back away from people who don't share the same Christian values.

Enter Floyd Sr. ... who says he doesn't really know if the two will ever be able to bury the hatchet.

He also said Justin needs to be true to himself -- but just because he's a godly man now doesn't mean Floyd has to change.

The message is essentially ... Floyd's still the same guy who had your back in the past -- you shouldn't push him away now.

But will Bieber get an invite to the Mayweather vs. McGregor after-party?

Jon Jones is DONE as a competitive fighter. Finished ... this according to Skip Bayless, who says it absolutely breaks his heart.

The FS1 star says he's gotten to know Jones through appearances on "Undisputed" -- and tells TMZ Sports news of JJ's positive steroids test crushed him.

"How can that guy be either so stupid, or so flawed, and ultimately so shockingly insecure, that you have to resort to steroids or whatever the PED was -- or any kind of drug?"

"He's just like a flawed human, but he's got so much potential. He's such a likable, nice guy."

In his parting message to Jones, Skip offered some tough love.

"Jon: I have tried for years to love you, and you just wouldn't let me love you. And in the end, I can't have any sympathy for you because you could've been the greatest."

Skip also looked back at JJ's appearance on "Undisputed" before his fight at UFC 214 ... and told us the way Jones acted seems pretty fishy now.

Even when Conor McGregor and Floyd Mayweather were trying to keep things business-like days before the fight, there were still insults flying at their final news conference.

Conor dropped the B word -- again -- vowing to "f**k this boy up" come Saturday night. He said it way more calmly this time around, but still didn't back off using the racially charged term.

For his part, Floyd complimented Conor -- calling him a tremendous fighter -- but reminded him of the the long list of boxing greats he'd defeated on the path to 49-0. As Floyd put it ... Pacquiao, Canelo and Mosley all had "had bombs" too.

UFC heavyweight Mark Hunt is throwing MAJOR shade at Jon Jones -- calling the guy a "cheating ass loser" after failing his UFC 214 drug test.

Hunt has gone through steroid scandals in the past -- his UFC 200 opponent tested positive for a banned substance after they fought. Hunt sued the UFC and demanded Brock Lesnar's fight checks as punishment.

So, when Hunt found out about Jones testing positive for his match against Daniel Cormier, the Super Samoan went off.

"DC should get all of Jones money," Hunt said ... before calling Jones a "betch" and a "cheating ass loser."

He then mocked Jones' bible verse tattoo -- saying, "Philippians 4:13 I can do all things through him who gives me strength plus the juice."

Jon Jones was devastated when he got the call about a positive steroids test -- so says JJ's teammate, who claims there's NO WAY Jones cheated and blames the whole thing on a "setup."

Frank Lester -- who trains with Jon at Jackson Wink in New Mexico -- says, "I was just at dinner sitting next to Jon Jones when he got the phone call about this failed drug test."

"Supposedly the story is between weigh ins and fight night he took an oral steroid. Which makes zero sense since it wouldn't do anything at all for Jon to do so. It takes weeks for steroids to build up in your system to be a performance enhancer. Jon was devastated to say the least."

"This is a setup, straight-up, no athlete would test clean his entire fight camp, and then randomly take some cheap f*cking oral steroid between weigh ins and fight night knowing he would be tested once he got done fighting."

"This is a straight setup. They are trying to ruin this kid's life. It makes no sense and Jon wouldn't do it."