Mminele, who will be replaced on an interim basis by Chief Financial Officer Jason Quinn, is leaving after disagreements with the board about strategy and culture change, Absa said, after earlier announcing that the board was in talks with him about his departure. Absa has been trying to improve performance since splitting from its former British parent Barclays in 2017. Its efforts have in the past year begun bearing fruit, with the bank winning back lost market share in key products like mortgages.