"Knowing what Eric has meant to this organization and this city made this an incredibly hard decision".
By releasing Berry, the Chiefs don't have to pay him an additional $7.25 million that would have become guaranteed by Friday.
He tore his Achilles' tendon in the 2017 opener, sidelining him the rest of the season.
It will be intriguing to see what kind of interest Berry generates on the open market, especially considering the veteran safety was limited to four total games over the past two seasons combined. He made the Pro Bowl in his rookie season.
"On behalf of my family and the entire Chiefs organization, I want to thank Eric for his many contributions to the Chiefs over the last nine seasons", Chiefs Chairman and CEO Clark Hunt said, via the team's official website.
Berry, a safety, is a five-time pro bowler, however, he's been plagued with injuries recently.
An inspirational player on and off the field, Berry's career has been defined by brilliant play and overcoming personal anguish to dominate for the Chiefs. "He's a special person, and we wish him the best as his career moves forward". Of the Chiefs' last 34 games, counting the playoffs, Berry participated in just three.
The move comes with the team set to add Tyrann Mathieu, who agreed to a three-year, $42 million contract this week. The Chiefs are also expected to trade linebacker Dee Ford to the San Francisco 49ers for a second-round pick in the 2020 NFL Draft, reports say.