UFC Lightweight Champion Conor McGregor has already made a big name for himself as a mixed martial artist and as a "boxer" who gave Floyd Mayweather a run for his money during their bout in August. Now, there are hot rumors about McGregor possibly joining the WWE.

McGregor's arrival would be a huge home-run in the WWE. The company has made countless cash since Brock Lesnar left UFC and rejoined the WWE in 2012. Ronda Rousey is also expected to appear in the squared circle in the near future.

So if McGregor were to join the WWE, who would be some of his worthy opponents? Here is a look at the top five candidates to face the UFC star.

5. Kevin Owens

Via WWE.com

It didn't take long for Owens to get over the crowd when Triple H helped him become the WWE Universal Champion in 2016. Despite playing the heel character, Owens has become one of the most beloved stars on the roster; his in-ring work and top-notch microphone skills have made K.O. a favorite already.

Owens is one of the biggest and more athletic wrestlers, who has been able to go toe-to-toe with legends like Chris Jericho, Seth Rollins, Shane McMahon, and others. So why wouldn't he be able to go up against McGregor?

Everyone knows that the UFC star is among the top trash-talking athletes. His promos against Owens (whom we believe is the best trash talker in the WWE right now), would be over the top awesome.

Put two microphone masters in the ring. Put two incredible athletes up against one another. Owens vs. McGregor would be one of the most genius moves the creative team ever pulled off.

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4. John Cena

via sescoops.com

Love him or hate him, there's no denying that few wrestlers have ever put on as many clinics on the Grandest Stage Of Them All like John Cena. This man has given us two epic matches against The Rock, plus WrestleMania classics against the likes of Batista, JBL, Randy Orton, Triple H and others.

Though many fans got bored and tired of Cena at the end of his full-time run, there's no denying he's one of the top money-making stars out there for the WWE. He remains one of the elite trash talkers; his promos with The Rock were of legendary.

Cena and McGregor would be an instant for that very reason—their insults, jabs and attacks at each other. Though Cena's athleticism has been slowed down by his age (40), and shoulder injuries, he has it in him to give us one more memorable match. And who else to face off but McGregor?

RELATED: JOHN CENA TRIED TO CHANGE A SMACKDOWN LIVE STORYLINE HE WASN'T INVOLVED IN

3. Braun Strowman

via bjpenn.com

Though many scoffed at Vince McMahon for once again pushing a hulking beast/muscle machine (this time Braun Strowman), to the top, it's actually gone much better than we could have expected.

Compared to other wrestling giants of the past and present, Strowman offers terrific skills in the ring and has put on some incredible bouts against Brock Lesnar and more recently Roman Reigns.

What we love about Strowman is his portrayal of being a nearly unstoppable force. Now, put him up against a real-life fighter and MMA champion, and you get a classic. How would this go down? A 5-foot-9, 155-pound UFC star vs. a 6-foot-8, 385-pound monster.If Strowman still hasn't gotten over yet with some of the fans, he sure would if McGregor were to face him in a match.

And to add fuel to the fire, allow me to remind you that Strowman called out the Irishman by saying "McGregor might make it on 205 Live, but he doesn’t want to step in the ring with me."

Shots fired. Now, let's see the real fight.

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2. Roman Reigns

via youtube.com

Roman Reigns just hasn't been able to get over with the WWE crowd, due to his lack of personality and rather bland character. But there's no denying that he's one of the most athletic and gifted all-around superstars to step foot in a WWE ring.

Thing is, Reigns doesn't have much else to prove as a superstar. He's already retired the Undertaker, took down the unstoppable Braun Strowman, ended Triple H's Authority reign, and most recently defeated John Cena.

But perhaps one epic rivalry with McGregor would FINALLY get him over. This would be the prime opportunity for the WWE to finally build up Reigns' microphone skills by having him going toe-to-toe with the company's top trash talker in promos.

Not to mention both men are gifted fighters and performers. If these two were to face off, my money would be on it being the match of the year. And let's cap the listing off with this tweet by Reigns:

RELATED: REASONS WHY ROMAN REIGNS WON THE INTERCONTINENTAL CHAMPIONSHIP

1. Brock Lesnar

via youtube.com

Not much explanation is needed here, but we'll go ahead anyway.

You have by far WWE's biggest name and star in Brock Lesnar. Put him in the ring with Conor McGregor, who is by far the face and the franchise for UFC. You have two men with very similar pasts and futures. What else could we ask for?

No matter the opponent (including 50-year-old versions of Goldberg and Undertaker), Lesnar has always been able to put on an entertaining match. But if McGregor is to debut in WWE, it only makes sense if he faces a former UFC colleague.

Both men are skilled fighters, in-ring talents and obviously huge money draws. These are two of the more polarizing figures in the sports entertainment industry. It wouldn't quite be as monumental as the Mayweather boxing match, but it would come pretty darn close.

Make it happen, WWE!

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