Guardian: BP chief executive Tony Hayward is preparing to step down within the next 10 weeks, according to a report this morning, as the embattled oil giant announced plans to sell $7bn (£4.6bn) of gas assets for its Gulf of Mexico clean-up fund. Hayward was heavily criticised for his reaction to the Deepwater Horizon disaster including the statement, “I want my life back”, that led to accusations of insensitivity. The beleaguered chief executive may get his wish soon, amid a growing …