Ex-Goldman Sachs CEO Lloyd Blankfein.REUTERS/Wolfgang Rattay Goldman Sachs' ex-CEO called up his successor to complain after taking a $50 million hit on the bank's stock, The New York Times reported. Lloyd Blankfein offered to give more advice to David Solomon and floated a return to the firm, per The Times. The embattled Goldman chief declined to take Blankfein up on his offer, The Times said. Goldman Sachs' former chief executive phoned his successor to complain after taking a $50 million hit from the bank's slumping stock price, The New York Times reported on Friday.Ex-Goldman CEO Lloyd Blankfein vented his frustration to the investment-banking giant's current boss, David Solomon, and volunteered to give him more advice or even rejoin the firm to help, The Times said.