Blockbuster: Fox says McGregor-Mayweather is "going to happen," and here's the date

Will these two superstars step inside the ring?

The talk started in early May, and in less than a month, discussions surrounding a potential Conor McGregor-Floyd Mayweather super fight are reportedly heating up.

Related: Conor McGregor's next fight is "99 percent" done

According to Fox Sports' Colin Cowherd, McGregor-Mayweather is happening in September:

"News I believe is gonna break here in about 2 weeks...I have already booked two rooms, September 17th and 18th in Las Vegas. My intel is Conor McGregor and Floyd Mayweather is going to happen. It changed late last week. I got a call then somebody else sent me something [Sunday] and Saturday. We've booked rooms in Vegas. [It's happening] this September."

"So Les Moonves [President and CEO of CBS] and the CBS peeps have decided, 'let's talk to the Fox - UFC peeps' and you've got Fox and CBS, you've got UFC, you've got boxing, you've got Floyd, you've got Conor. It's gonna make a lot of money for people."

Mayeather has said he "absolutely" believes the fight will happen, while McGregor has been seen in the gym sparring with former champion boxers.

Cowherd is certainly plugged in with network executives, and obviously Fox has a great relationship with the UFC. Now let's see if this one has legs.