[Getty Images]Two centre-backs caught the eye of Liverpool's scouting department at the U17 World Cup in Qatar last November.Within weeks, the club spent a combined £3.5m on the pair: Senegal's Mor Talla Ndiaye and Austria's Ifeanyi Ndukwe.Under Matt Newberry, Liverpool's head of global talent, this was evidence of future planning in full flow.Yet surely no-one inside the club would have expected the teenage duo to be the centre-back pairing for most of Liverpool's opening pre-season fixtu