The Chicago White Sox's long-awaited front office shift is due to occur Friday.
According to multiple media reports, longtime general manager Ken Williams officially will take the new role of baseball operations chief, with Rick Hahn replacing him as the GM.
Williams, 48, still will hold the title of senior vice president, the Chicago Tribune reported.
Williams has held the GM post since October 2000, and he led the club to the World Series championship in 2005, the White Sox's first crown since 1918.
The writing change has been in the works for some time. The White Sox have had no head of baseball operations in their organization. Williams has said numerous times that he would love to be able to have some of the baseball decisions but not have to deal with the media or the grind that the GM job entails.
The model of what Williams wanted was demonstrated last offseason, when Theo Epstein was hired by the Chicago Cubs to be their president of baseball operations, with Jed Hoyer taking over the GM job.
Hahn, 41, has been part of the White Sox's front office for 12 years. He's handled most of the negotiations with agents -- another task that Williams grew tired of.
Hahn has been atop the team's list of possible general managers for the past three years.
The first items on the new GM's agenda figure to include decisions on whether to pick up a $13 million club option on third baseman Kevin Youkilis and whether to attempt to retain catcher A.J. Pierzynski, who will be a free agent. The White Sox already announced their intention to decline the $22 million option on Jake Peavy's contract for 2013, opting to pay the right-hander a $4 million buyout.