"I want to thank the Texans organization, Mr. McNair, my teammates and the City of Houston for your support during these past 12 years.
And especially to the fans - Thank you for allowing me to live out my childhood dream. It was an honor and a privilege to play in front of you every Sunday.
Johnson has been a stalwart within the Houston community, including his annual Christmas shopping spree for at-risk children.
This situation is another reminder that the NFL can be a cruel, cruel business, but the overwhelming majority of players remain classy.