Barclays offered the position to Staley, currently managing partner of U.S. hedge fund firm BlueMountain Capital Management, and he accepted the offer, according to the person. A second person familiar with the matter said Staley was on a shortlist of potential successors, but could not confirm the appointment. Staley, who was on the shortlist when Barclays looked for a CEO in 2012, had left JPMorgan in early 2013 after 34 years at the bank to join Blue Mountain Capital.