Two fantasy football regulars are going to be free agents.

FOX's Chris Hoenig reports:

The Minnesota Vikings announcing they will not pick up the $18-million option on Adrian Peterson's contract for the upcoming season, releasing the franchise's all-time leading rusher after 10 years.

Peterson has suggested that the Giants, Buccaneers and Texans may be attractive teams, but also said after the season:

(Peterson) "I would love to finish my career here with the Minnesota Vikings. That's where my mind is."

Vikings GM Rick Spielman says they are open to re-signing the soon-to-be 32-year-old at a lower salary.

The Kansas City Chiefs, meanwhile, releasing their all-time leading rusher, Jamaal Charles, after nine years in Kansas City.

Chris Hoenig, FOX News.

Follow Chris Hoenig on Twitter: @Chris_Hoenig