Another source inside Barclays' investment bank, talking anonymously because they are not authorised to speak to the media, said lower staff attrition at its technology and back office operations had started to worry cost-conscious managers.
The BCG review could lead to layoffs, the source familiar with the review said, although no decisions have been made.
Some top Barclays investors, however, told Reuters they would have misgivings about a plan to prioritise investment over capital distributions.
But a recent shake-up at its investment bank has raised concern about Barclays' ability to compete amid a worldwide dealmaking slump.
They are not valued properly together," said Alan Beaney, chief executive at RC Brown Investment Management, which has held Barclays shares since 2012.
Persons:
C.S, shivers, Richard Marwood, Venkat, Edward Bramson, Richard Buxton, Alan Beaney, Elisa Martinuzzi, Mark Potter
Organizations:
Barclays, Boston Consulting, Reuters, Royal London Asset Management, Lehman Brothers, Jupiter Asset, RC Brown Investment Management, BNP, HSBC, Reuters Graphics Barclays, Jefferies, Thomson
Locations:
U.S, Africa