Tyrann Mathieu's retirement has sparked speculation about a possible comeback and potential Chiefs betrayal. Uncover all the details.

Tyrann Mathieu isn't completely closing the door on a return to the NFL, but for now, the former Super Bowl champion and three-time first-team All-Pro remains confident in his decision after announcing his retirement Tuesday.

Tyrann Mathieu caught the NFL world by surprise when he announced his retirement just before the start of New Orleans Saints' training camp earlier this week, ending his decorated career with his hometown team.