Premier League clubs have broke their all-time summer transfer record with spending reaching £3.49bn.A total of £506.5m was spent on deadline day itself, up from £391m last year.The total amount spent during the window considerably dwarfs the £1.13bn spent by clubs just five years ago and underlines the power top English clubs have to attract talent, according to figures provided to BBC Sport by Paul Macdonald, founder of FootballTransfers.com.Three of the 10 most expensi