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There was a Sunday deadline for Floyd Kephart and the New City development group to deliver a financing plan for building a new stadium for the Raiders next to their current home at the Coliseum.

According to Raiders owner Mark Davis, there’s a $400 million gap in financing that has to close for the possibility of a new stadium in Oakland to be “a doable deal.” The San Francisco Chronicle reports that the framework of the deal is expected to include a sale of the land to the Raiders at fair market value as well as $100-140 million from city and county coffers for infrastructure improvements.

Complicating matters for the Raiders is the fact that the Oakland A’s have a 10-year lease at the Coliseum and no desire to continue sharing the space with the football team. The team is also exploring the possibility of building a new stadium at the site and there’s talk of a Coliseum City that would feature new buildings for the A’s, Raiders and Warriors, but A’s owner Lew Wolff said this weekend that it won’t work.

“We have thoroughly investigated things,” Wolff said, via the San Jose Mercury News. “And there is no good way to put two brand-new venues at the Coliseum site. If the Raiders are going to be there, then I don’t know what will happen. … I don’t want this fellow [Kephart] telling the A’s what to do. We have no desire to compete with the Raiders for PSLs (personal seat licenses) and sponsors. We just don’t see that. The timetable is for something to be known by June 21. That’s today. I’m very interested in knowing what he’s come up with.”

The A’s say they haven’t been pursuing stadiums outside of Oakland, something that can’t be said of the Raiders as they continue to push for a joint stadium with the Chargers in Carson, California. The release of the proposed financing deal should provide a bit more of an idea about how much farther down that road the team will be going.