A public appointment has appeared on Facebook indicating the possibility of a Cosmos match against the San Jose Earthquakes.
According to the invitation, Saturday, February 27th at 7 PM, the Earthquakes will host the Cosmos at Avaya Stadium.
Upon clicking the Ticketmaster link provided, the landing page indicates that tickets would go on sale to the general public tomorrow.
With the cold war between the NASL and MLS and the history of the Cosmos, who turned down MLS to join the NASL, this would make for an interesting narrative as the Cosmos have only faced MLS sides in US Open Cup play.
EDIT: As of this afternoon, both teams have confirmed that the match will take place.