By Soyoung Kim and Sophie Sassard NEW YORK/LONDON, Jan 14 (Reuters) - Barclays willcut investment bankers' bonuses for 2012 in a move that will cuttheir total pay for the year by up to 20 percent as the Britishbank's new boss seeks to tackle high costs, people familiar withthe matter said. Barclays is finalising bonuses for last year and overallcompensation for investment bankers will fall by between 10percent and 20 percent on average, two sources said. New Barclays CEO Antony Jenkins is revamping the bank andhas pledged to cut pay to lift returns for investors. He aims to cut compensation in the investment bank to 39percent of its income for 2012, one of the sources said, downfrom 47 percent in 2011. Barclays declined to comment. Jenkins will deliver hisrestructuring alongside 2012 results on Feb. 12, and staff areexpected to be told bonus details in early February.