Former top referee Pierluigi Collina wants to continue an experiment with goalline assistants rather than use technology when he takes control of UEFA officials. The 50-year-old, one of soccer's most famous referees with his bald head and menacing stare, has left his job as head of Italian officials to take up a similar role organizing referees for European competitions. “I've decided to leave my role because I have received an important offer from UEFA,” Collina, who retired from refereeing in 2005, told reporters. Incidents at the World Cup including England's Frank Lampard having a shot cross the line not awarded as a goal have forced soccer authorities to reconsider the idea of using technology to clear up controversial decisions. UEFA tested placing extra official on each goalline in last season's Europa League to check for infringements in the area and whether the ball crossed the line. Collina backs that plan rather than a goalline camera or an electronic chip inside the ball. “People have said that in last season's Europa League there were no controversial calls but I think it is exactly because of the extra officials in the area,” he said. “I think that some of the shock cases seen in the World Cup would have been avoided.” Marcello Nicchi, the new head of Italian referees, has said he supports the use of technology. Meanwhile, Paraguay coach Gerard Martino claimed he was expecting an apology from FIFA following his team's 1-0 defeat to Spain at Ellis Park Saturday. Martino was angered by a pair of decisons that went against his team and potentially cost them victory. In the first half Paraguay striker Nelson Valdez put the ball in the net after latching onto a long ball but the linesman's flag went up and it was chalked out for offside although television replays showed the decision was wrong. Then in the second half, just after Paraguay forward Oscar Cardozo had seen his penalty saved by Spain captain Iker Casillas following Gerard Pique's hauling down of Cardozo in the box, the Europeans were also awarded a spot-kick. There appeared to be minimal contact between Antolin Alcaraz and Spain striker David Villa before the new Barcelona signing went down. Both Pique and Alcaraz were booked for their challenges although Xabi Alonso missed the twice-taken penalty. “I should say that some decisions could have changed the course of the match,” said Martino.