The A's are currently seeking project approvals from the City of Fremont. The ballpark would seat between 30,000 and 35,000 people and cost between $400 million and $500 million. A cost estimate was not immediately available for the lifestyle center, which is slated to include some 2,900 housing units, 550,000 sf of stores and restaurants and a 100-room boutique hotel. Completion is tentatively scheduled for 2010 or 2011.

Meanwhile, the A's team will continue to operate under its current lease agreement at McAfee Coliseum through the 2010 season, not including the option for three one-year extensions. McAfee Coliseum has been the A's home since 1968.

The bulk of the acreage for the new development, 152 acres, is owned by ProLogis but has been controlled by Cisco since 2000, when it inked a long-term lease for the property that included an option to buy. That agreement has been adjusted to allow for the project now planned for the site, and Cisco has reportedly assigned the lease and the option to the A's, with whom it also has negotiated a $4-million-a-year naming sponsorship agreement that in part will result in the new ballpark being called Cisco Field.