[LONDON] Liverpool signed Southampton’s Virgil van Dijk on Wednesday for a reported £75 million (S$134.72 million) in a deal that makes him the world’s most expensive defender.Van Dijk has been linked with a move to Liverpool for several months and the Anfield club were forced to issue an apology after an alleged illegal approach for the Netherlands international earlier this year.Reds boss Jurgen Klopp has remained determined to sign Van Dijk as he tries to shore up a leaky defence that has fatally damaged Liverpool’s Premier League title ambitions.Although Chelsea and Manchester City were said to be interested in Van Dijk, Klopp has finally got his man on weekly wages of £180,000.”Liverpool Football Club can confirm they have reached an agreement with Southampton for the transfer of Virgil van Dijk,” a statement on the club’s website said.”The Reds have agreed a deal with the south coast club, and the player himself, that will see the 26-year-old defender move to Anfield when the transfer window re-opens on January 1, 2018.”The Netherlands international will be assigned squad number four, upon his arrival at Liverpool.” The previous world record transfer for a defender was the £54 million Manchester City paid Tottenham for England…