Commissioner Roger Goodell issued a letter criticizing a proposal by the City of Oakland for stadium plans, according to NFL Network reporter Ian Rapoport.
The letter was addressed to Oakland Mayor Libby Schaaf regarding the $1.3 billion mixed-use stadium on the site of the Oakland Coliseum.
"The material that we reviewed earlier today ... confirms that key issues that we have identified as threshold considerations are simply not resolvable in a reasonable time," Goodell wrote. "And in that respect, the information sent today does not present a proposal that is clear and specific, actionable in a reasonable time frame and free of major contingencies.