Barclays added two prominent names from the investment world to its board at a time when the bank is buffeted by Brexit, a depressed stock price and the agitations of an activist investor.

Mohamed El-Erian, one of the best-known names in global fund management, is set to join Barclays as a non-executive director. El-Erian served as chief executive of bond giant Pacific Investment Management Co. until 2014. He left after he clashed with Pimco’s top bond manager at the time, Bill Gross.