Quarterback Derek Carr also decided to call an end to his playing career after two seasons in New Orleans. Carr, a second-round pick in 2014, struggled to recover from an injury in his throwing shoulder. Instead of going through a grueling recovery process to return to the field, he decided to end his career.

Mathieu went on to joke that his five-year-old daughter was upset at him for retiring because she was going to miss getting "dressed up" for his game days. Mathieu and his girlfriend share three kids: 12-year-old and 11-year-old sons, Noah and Tyrann Jr., and a five-year-old daughter, Mila.

The New Orleans Saints are reportedly signing veteran safety Julian Blackmon, according to Ian Rapoport of NFL Network.