Mendenhall, 26, spent his first five seasons with the Steelers, then started 13 games last year for the Cardinals, rushing for 687 yards and eight touchdowns.
A first-round draft pick from Illinois in 2008, Mendenhall totaled 4,236 yards and 39 touchdowns in his six-year career. He surpassed 1,000 yards rushing in the 2009 and 2010 seasons.
Mendenhall hinted at retirement in a February 25 column for Huffington Post: “And as I write this, today is the day that the journey is over and I am fully at peace. Eagerly looking to a new way, which lies ahead.”
PFR’s Luke Adams ranked Mendenhall in the second tier of free agent running backs.