Description:FIFA's president Sepp Blatter said on Saturday (December 15) that the referees are happy with the goal-line technology systems being used at the Club World Cup. Soccer's world governing body are testing two systems, Hawk-Eye and GoalRef, at the Club World Cup in Japan, with one of them to be used at next year's Confederations Cup in a bid to avoid a repeat of incidents like England's Frank Lampard's disallowed goal against Germany in the last World Cup. Blatter said the early signs were good.(0:38)