• Chelsea spent £64m in four years on changing managers• Exceptional items £41.9m out of £67.7m 2010-11 lossDespite the looming impact of Uefa's financial fair play (FFP) regulations, Chelsea's full accounts show that Roman Abramovich finds it hard to break one expensive habit – it cost the club a total of £28m to sack Carlo Ancelotti in the summer and hire his replacement, André Villas-Boas.The £28m it cost to pay off Ancelotti and his back-room staff and compensate Porto for the acquisition of Villas-Boas takes to around £64m the total Chelsea have paid out in hiring and firing managers in the last four years alone.The club's full results t...