U.S. President Barack Obama plans to name former U.S. Treasury Secretary Lawrence Summers as the next chairman of the U.S. Federal Reserve Board of Governors, according to a report Friday by Japanese newspaper Nikkei, which cited unnamed sources. An announcement is expected as early as late next week, following the conclusion of the Fed's policy meeting on Wednesday. Treasury Undersecretary Lael Brainard, who served as an economic adviser under the Clinton administration, will likely be named the central bank's vice chairman, the Nikkei said. Summers would succeed Fed Chairman Ben Bernanke, whose term expires in January. Summers and current Fed Vice Chairman Janet Yellen had been considered the front-runners to become the Fed's next chief.