American Idol judge Simon Cowell reportedly plans to knock Jennifer Lopez's Beverly Hills mansion down after spending $10 million (GBP5.7 million) to buy it. Insiders claim TV's Mr Nasty will spend a further $5 million (GBP2.85 million) tearing the property down and building a new one - because he isn't a fan of Lopez's style. Cowell also owns multi-million dollar mansions in London, Spain and the Middle East and he already owns a $11 million (GBP6.3 million) spread in Los Angeles.