Ben Margot, AP
Oakland Raiders Owner Mark Davis speaks during a media conference Thursday, Feb. 11, 2016, in Oakland, Calif. With the Oakland Raiders’ long-term plans still up in the air, team officials announced Thursday afternoon that the team had agreed to a one-year lease extension to remain at the O.Co Coliseum for the 2016 NFL season. The deal also includes options for the 2017 and 2018 seasons, Raiders owner Mark Davis said at the press conference. (AP Photo/Ben Margot)

LAS VEGAS — Raiders owner Mark Davis says he wants to move the team to Las Vegas and is willing to spend a half billion dollars as part of a deal for a new stadium in the city.

Davis upped the ante in a bid to move the team to this gambling city, appearing Thursday alongside soccer great David Beckham and billionaire casino owner Sheldon Adelson before a committee studying the idea of a $1.4 billion stadium.

He repeated what he said he told Nevada Gov. Brian Sandoval a few weeks ago, saying the Raiders want to turn the Silver State into the "silver and black state."

Davis noted the Raiders played in Las Vegas in an exhibition against Houston in 1964, and said with help building the stadium it won't be another 50 years before they play here again.