Carlson was non-tendered by the Rays on Friday, Marc Topkin of the Tampa Bay Times reports.
Carlson was dealt to the Rays at the trade deadline and posted a .615 OPS, which was an improvement from his first half of the season with the Cardinals. Given his pedigree, and because he's still only 26 years old, Carlson may get a big-league deal from someone. However, his career 94 wRC+ and .304 wOBA likely mean he'll struggle to find regular playing time.