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In this July 28, 2003, file photo, William Clay Ford, left, Detroit Lions owner and chairman; Matt Millen, president and chief executive; and William Clay Ford Jr., right, vice chairman, talk during the NFL football team's practice in Allen Park, Mich. Bill Ford Jr. has seen enough of the way Millen is running his father's Detroit Lions. When asked Monday, Sept. 22, 2008, Ford said Millen should leave the team, but he didn't have the authority to make such a significant change. (AP Photo/Paul Sancya, File) ( Lions Millen Ford Jr )

Detroit Lions owner William Clay Ford, left, sits with team general manager Martin Mayhew, center, and talks with president Tom Lewand, right,during NFL football training camp in Allen Park, Mich., Friday, Aug. 7, 2009. (AP Photo/Carlos Osorio) ( Lions Camp Football )

Detroit Lions owner and chairman William Clay Ford, right, shares a laugh with former Lions linebacker Joe Schmidt before the start of an NFL football game against the St. Louis Rams at Ford Field in Detroit, Sunday, Oct. 10, 2010. (AP Photo/Carlos Osorio) ( Rams Lions Football )

Atlanta Falcons coach Billy "White Shoes" Johnson talks with Deroit Lions owner William Clay Ford and general manaager Matt Millen before play in a Thanksgiving Day game, November 24, 2005, at Ford Field, Detroit. The Falcons defeated the Detroit Lions 27 - 7. (Photo by Al Messerschmidt/Getty Images) ( 6601781 )

Ceremonial bricks are placed at the groundbreaking ceremony for Ford Field, the new home of the Detroit Lions in downtown Detroit, Tuesday, Nov. 16, 1999. Pictured are, from left: Ford Motor Co. President and CEO Jacques Nasser, Detroit Lions Vice Chairman William Clay Ford Jr., Detroit Lions Chairman and President William Clay Sr., and Detroit Mayor Dennis Archer. It is expected to be completed by July 1, 2002. (AP Photo/Paul Sancya) ( LIONS STADIUM )

Detroit Lions owner and Chairman William Clay Ford, left, shares a laugh with Lions President and C.E.O. Matt Millen, right, before a game against the Philadelphia Eagles, Sunday Sept. 26, 2004. (AP Photo/Jon M. Brouwer/The Grand Rapids Press) ( EAGLES LIONS )

In this Oct. 26, 2008, file photo, Detroit Lions owner and chairman William Clay Ford walks on the sidelines prior to an NFL football game against the Washington Redskins in Detroit. Ford Motor Co. said in a statement Sunday, March 9, 2014, that Ford died of pneumonia at his home. Ford, who helped steer Ford Motor Co. for more than five decades and owned the NFL's Detroit Lions, has died at the age of 88. He was the last surviving grandson of company founder Henry Ford. (AP Photo/Paul Sancya, File) ( Obit William Clay Ford Football )

Detroit Lions president and chief executive officer Matt Millen, left, and team owner and chairman William Clay Ford smile while watching the NFL football team's training camp in Allen Park, Mich., Thursday, July 24, 2008. (AP Photo/Paul Sancya) ( Lions Camp Football )

Detroit Lions owner William Clay Ford, left, listens to interim general manager Martin Mayhew and executive vice president Tom Lewand, right, before the Lions' NFL football game against the New Orleans Saints in Detroit, Sunday, Dec. 21, 2008. After the game, the Lions released a statement in which Ford said he expects Mayhew and Lewand to return next season. (AP Photo/Paul Sancya) ( Saints Lions Football )

Detroit Lions President William Clay Ford, left, announces that head coach George Wilson, center, had been given an extended coaching contract for an indefinite period, Dec. 21, 1964. Lions' general manager Edwin Anderson is at right. At the same time, Ford revealed that joint decision was made by the three, relieving all the Lions assistant coaches of their duties, with Wilson free to form his new staff for the 1965 season. (AP Photo/Alvan Quinn) ( Lions Wilson )

William Clay Ford, 38, is shown at a press conference after he became owner of the Detroit Lions football team, Nov. 22, 1963. Stockholders approved the sale of the club to Ford for $6 million. Ford, scion of the Ford Motor Company family, became a pro football enthusiast after his election to the Lions' board of directors in 1956. (AP Photo/Preston Stroup) ( Lions Ford )

William Clay Ford poses in front of a lion drawing in the Detroit Lions office after officially taking over as president of the football club, Jan. 24, 1961. (AP Photo) ( Lions Ford )