Changes are part of collaboration with Unstereotype Alliance.
Costs are reported to be for personal expenses over several years.
Veteran marketer will leave in May 2019.
Sir Martin Sorrell regrets not simplifying WPP faster in terms of client-focused work, more country management and making sure this is underpinned by digital.
Mandate covers 30 markets including India across Apac and EMEA
Executive chairman apologises for 'miscommunication on a number of points' that 'has caused upset and offense'
Top news, insights and analysis every weekday
Sign up for Campaign Bulletins