Forget unsuspecting NFL wide receivers. The next guy Charles Tillman executes the "Peanut Punch" on might be a fugitive running from the law.

The former Chicago Bears cornerback recently began training to join the Federal Bureau of Investigation, multiple individuals told the Tribune, including a high-ranking law enforcement source who is not authorized to speak publicly on the matter.

Tillman, 36, retired from the NFL last summer and signed a ceremonial one-day contract with the Bears to do so on July 22, 2016. He played 12 of his 13 seasons for the organization and helped the Panthers to a 15-1 record and appearance in Super Bowl 50 after the 2015 season.

He was renowned for his ability to jar the ball loose from offensive players and forced 44 fumbles during his career, nearly twice as many as the next closest defensive back during his time in the league. Tillman was a two-time Pro Bowl selection and was named the NFL Walter Payton Man of the Year in 2013 for his philanthropic efforts. He is considered one of the best cornerbacks in Bears history.

FBI guidelines mandate prospective candidates for hiring as a special agent must be at least 23 years old but younger than 37 at the time of appointment. Tillman turns 37 on Feb. 23.