Jon Heyman of FanRag Sports reports that the Cardinals "are looking at high-end starters, including Yu Darvish and Jake Arrieta."Cardinals looking at Darvish, Arrieta
Heyman does add the caveat that "they will first investigate the trade market before committing to a big-ticket free agent." President of baseball operations John Mozeliak has stated that a middle-of-the-order bat and a closer are bigger priorities for the Cardinals this winter than a starter, but it sounds like they'll still at least kick the tires on Darvish and Arrieta. However, if they do add a starter they might ultimately wind up settling on a lesser name, whether it be via trade or free agent signing.
Source: FanRagSports.comNov 13 - 11:18 AM
http://www.rotoworld.com/player/mlb/4998/yu-darvish