Cardinals GM John Mozeliak has also engaged the Colorado Rockies in talks for Matt Holliday.
Ryan Ludwick, who is first-year arbitration eligible and had a breakout 2008, is the prime bargaining chip being offered.
The Rockies were initially focused on Colby Rasmus, but they are believed to be looking for a player that can contribute immediately.
Cardinals Offering Ludwick For Holliday?