CLEVELAND, Ohio -- Now we know why the Browns didn't know if Johnny Manziel was in Las Vegas on Saturday night.

He apparently went incognito, wearing a blond wig, fake mustache, glasses and a hoodie, according to radio host Mitch Moss of ESPN Las Vegas.

Oh, and he introduced himself as Billy, maybe after Idol, with the blonde wig and all.

But somehow, Billy Football just doesn't have the same ring to it.

The Manziel sighting went so viral on ESPN Las Vegas that it crashed the site.

But never fear. ESPN Las Vegas posted all the details on its Facebook account:

"We all know Vegas stories can get extremely crazy involving celebrities. This is going to sound wild, and maybe hard to believe, but this is what we're hearing regarding Johnny Manziel.

"Our sources tell us Manziel was at a popular night club on the strip Saturday night. The QB entered wearing a blonde wig, a fake mustache, glasses, and a hoodie.

"Manziel introduced himself as 'Billy.' He was there into the 3 a.m. hour and when it came time to pay the bill, he asked to have it comped because he didn't bring cash and also didn't want to put it on his card.

"However, the sources tell us he ended up paying with his card and signing the check.

"By 3am he appeared to be enjoying the party scene that Vegas is known to offer.

"The club had Manziel and his crew placed at a VIP table close to the DJ booth. The table is located in one of the darkest areas of the club.

"Manziel dined at the club's restaurant before going to the nightclub. He was seated at the most private area in the restaurant, which is still out in the open. And yes, he ate with his wig and glasses on.''

WTAM's Will Burge tweeted that he's positive it's true, and later said on the air that he has a screen-shot of a Snapchat with Manziel in disquise.

Of course, the Browns are not the slightest bit amused by Manziel's weekend excursion. He missed his mandatory concussion treatment on Sunday morning, and embarrassed the organization again by traveling to Vegas just three days after being diagnosed with a concussion and two days after being ruled out of Sunday's season-finale against the Steelers, a 28-12 loss.

He did show up for Monday's exit meetings, but it might've been too little, too late. Peter King of The Monday Morning Quarterback reported that the Browns are 'so done' with Manziel, and that the quarterback wants to play in Dallas anyway.

Haslam also had nothing positive to say about Manziel during a press conference Sunday night and was noncommittal when asked if he wants him on the team next year.

"It will be up to the coaches, and Executive Vice President of Football Operations Sashi (Brown) and the GM as to who's on the team,'' Haslam said. "They will make those calls.''

Asked if Manziel needs to meet certain conditions to remain with the Browns, Haslam said, "I think we will expect that of everybody. We certainly expect that of Johnny, too."

He also hinted that Manziel might not be long for Cleveland when agreeing with left tackle Joe Thomas that the quarterback is vitally important.

"I don't think there is anything that compares to it in professional sports in terms of importance to a team,'' he said. "Joe has been around the game. He's smart. He's exactly right.''

Then he added, "We do have the second pick in the draft."

That has to be great news to the coaching candidates rolling into town this week, including Lions defensive coordinator Teryl Austin, Bears offensive coordinator Adam Gase and former Bills head coach Doug Marrone.

But not such great news for Billy Manziel.