Former Tottenham managers Ange Postecoglou and Thomas Frank will go head to head in the TV studio this summer as rival World Cup pundits. The Guardian has learned that Frank has signed a deal with BBC Sport as one of their main analysts, with Postecoglou having agreed to work for ITV. The BBC is also understood to have added former Arsenal striker Olivier Giroud to their regular punditry panel that includes Wayne Rooney, Joe Hart and Alan Shearer, with ITV recruiting Andros Townsend to join Gary Neville, Ian Wright and Roy Keane. Frank has not spoken publicly since being sacked by Tottenham in February so his first appearance on the BBC should make compelling viewing, particularly for the club’s fans.…