Lefty reliever Brian Fuentes is likely to join the Cardinals, sources said.
The Cardinals have a need for a lefty out of the pen. Mark Rzepczynski hasn't been as effective as last year, and has a 5.52 ERA.
Fuentes had interest from six teams after his release from the A's no surprise considering the paucity of good lefthanded relievers, and he wanted to play for a winner.
Fuentes, 36, has 204 career saves. He struggled this year with Oakland and had a 6.84 ERA with the A's.