7:59pm: The Angels appear to be seeking top pitching prospects in return for Aybar, but the Cardinals have no interest whatsoever in including Michael Wacha or Carlos Martinez in a possible deal, according to Jim Bowden of ESPN and MLB Network Radio (Twitter links).
6:27pm: After their interest in Alexei Ramirez and Jimmy Rollins failed to produce anything meaningful, the Cardinals have reached out to the Angels regarding Erick Aybar, according to Danny Knobler of CBS Sports.
The Cardinals have deployed Pete Kozma as their primary shortstop in 2013, and while he's provided solid defense, Kozma is batting just .241/.283/.301 through 339 plate appearances. Aybar, on the other hand, is hitting .283/.320/.410 dating back to the beginning of the 2011 season. He signed a four-year, $35MM extension prior to the 2012 season that took effect beginning this season. As such, he's under contract through 2016 at $8.5MM per season.
Knobler points out that the Cardinals are rich in pitching prospects that would be of interest to the Angels, though to this point, St. Louis GM John Mozeliak has been highly reluctant to deal from that surplus.