Martin Sorrell stands to pick up £20m as WPP faces possible breakup

Analysts see chief exec’s departure and recent share slump as strong reasons to split world’s biggest ad groupSir Martin Sorrell is in line for almost £20m in payouts from WPP over the next five years, as part of the deal struck to leave the advertising group he founded more than three decades ago.The departure of Sorrell, who resigned on Saturdaybefore learning the findings of an internal investigation into alleged personal misconduct, is also being viewed as a potential catal