The Kansas City Royals designed Jose Guillen for assignment last week.
His next stop, according to Ken Rosenthal of FOXSports.com, is the San Francisco Giants.
Rival executive says Guillen to SFGiants is "done."
Enrique Rojas of ESPNDeportes.com first reported the trade.
Upon completion of the trade, Guillen was expected to fly from Miami to San Francisco in time to debut in the series that begins Friday between the Giants and San Diego Padres.
The Royals have yet to confirm the move.
Check out Royals Review for more on the Jose Guillen trade.