Since 2018, a former engine manufacturing site in Warner Center has been under contract to Triple Five Group, the owners of Minnesota's Mall of America.

Until now.

The 47-acre Rocketdyne site is back on the market, CoStar reports, citing marketing materials. Realty Advisory Group is marketing the site for sale. A list price wasn't included.

The Cold War-era site was once a plant that employed thousands of workers, many of them San Fernando Valley residents, who built rocket engines. The Virginia-based defense company Raytheon Technologies owns the property.

The property could share the neighborhood with a possible Chargers practice facility. Rams owner Stan Kroenke has been collecting land in the neighborhood for about a year, including a large mall site previously owned by Unibail-Rodamco-Westfield.

Warner Center has a set of guidelines steering development that aims to make it more dense, with a mix of uses including entertainment, retail and residential.

The massive property was cleared of buildings in the late 2010s and has been vacant since then. It was once floated as a possible site for Amazon's second headquarters and, before that, slated to become a mixed-use neighborhood.

Whoever buys the Rocketdyne site won't be able to start moving dirt immediately. There are remediation issues to contend with at the site that have caused issues as recently as last year.