Gettleman held the position since 2013.
"After much thought and a long evaluation of our football operations, I have chose to relieve Dave Gettleman of his duties as general manager", Richardson told the Panthers official website.
During an appearance on the Know Them from Adam podcast last week, Williams said the Panthers were one of four teams he wouldn't play for next season, along with the Cleveland Browns, Jacksonville Jaguars and Dallas Cowboys. He made the playoffs in three of his four years, including a trip to the Super Bowl in 2015.
His mindset has apparently changed, although the Panthers might not need the veteran running back after selecting Christian McCaffrey with the No. 8 pick in the 2017 National Football League draft.
Gettleman served as the Giants' pro personnel director from 1999-2011 and was their senior pro personnel analyst in 2012.
This is the strongest statement we've seen from a former player since the shocking news came out that Gettleman was getting the ax. He was also the architect of the 2015 Panthers that went 15-1 and reached the Super Bowl.
Carolina finished the 2016 football season with a record of 6 wins and 10 losses. Norman then left and signed a five-year, $75 million contract with the Washington Redskins.