OAKLAND — With San Diego businessman Floyd Kephart out of the picture, a new developer interested in building a stadium for the Raiders in Oakland could be poised to take on a larger role.

Southern California development firm SunCal, which has been advising the team since at least March, attended a recent meeting with city officials, confirmed Scott McKibben, executive director of the joint Oakland-Alameda County Coliseum Authority.

McKibben said the meeting involved a “healthy exchange” of thoughts and concepts about a familiar problem — closing the estimated $400 million funding gap needed for a new stadium at the site of the O.co Coliseum in East Oakland.

McKibben wouldn’t talk about the firm’s interest, and a SunCal spokesman couldn’t say whether the firm was seeking a bigger relationship with the Raiders. Team officials didn’t respond to a message on Friday morning.

But SunCal, the firm behind the Oak Knoll development in Oakland City Councilman Larry Reid’s district, has long been interested in working with the Raiders, Reid said, extending beyond Jean Quan’s administration.

“The exclusive negotiating agreement (with Kephart) is gone, so they have a serious interest in being involved with working with the Raiders to make happen what everybody would like to see happen,” Reid said Friday.

But that’s between “SunCal and the Raiders,” he said, while noting that time is of the essence as the NFL determines which teams will be moving to Southern California.

Oakland Mayor Libby Schaaf declined to comment. But a city source said the mayor’s administration isn’t keen on SunCal, a residential developer, believing there’s a higher, better use for the land around the Coliseum. The city doesn’t want to use taxpayer funds to pay for a stadium and will explore using real estate rights to fill the gap for a nearly $1 billion stadium.

Reid said the city wasted years of precious time on doomed projects as its sports franchises prepared to leave the city.

“Like (NFL executive) Eric Grubman said, Oakland wasted three years, and now it’s four years,” Reid said. “We’re in the fourth quarter now and the clock is ticking.”

Mike Blasky covers Oakland City Hall. Contact him at 510-208-6429. Follow him at Twitter.com/blasky.