[1][2] He re-signed with the Bears on December 30, 2013, and was released on August 31, 2014.

[3][4] Hartson signed with the Kansas City Chiefs on January 20, 2015.

[6] Hartson was acquired from waivers by the Pittsburgh Steelers on April 17, 2015 and released by the team on May 9.

[7][8] Hartson signed with the Tampa Bay Buccaneers on August 27, 2015.

[10] On March 31, 2016 Hartson signed with the Dallas Cowboys.