Fifa president Sepp Blatter has apologised to the Football Association over Frank Lampard's disallowed goal in England's World Cup defeat by Germany.Blatter said the error had convinced him to reopen the debate on goal-line technology at a board meeting in July.Lampard was denied a goal in Sunday's 4-1 last-16 loss, even though his shot clearly crossed the line.Blatter also said sorry to Mexico after Carlos Tevez's offside goal was allowed to stand in Argentina's 3-1 victory.Lampard's strike came during a spell of England dominance and would have levelled the score at 2-2.The high-profile error sparked to a clamour for referees to be given more assistance, with international players' union FIFPro leading calls for goal-line technology.Blatter said the issue will now form part of the agenda at next months's meeting of the International FA Board, the body that decides the laws of the game."It is obvious that after the experiences so far at this World Cup it would be a nonsense not to reopen the file on goal-line technology," stated Blatter.The Tevez goal - the first in Argentina's second round win on Sunday - was replayed on the screens in the stadium, sparking angry clashes between officials and the Mexican players and coaches."Personally I deplore it when you see evident referee mistakes but it's not the end of a competition or the end of football, this can happen," added Blatter."Yesterday I spoke to the two federations [England and Mexico] directly concerned by referees' mistakes."I have expressed to them apologies and I understand they are not happy and that people are criticising."We will naturally take on board the discussion on technology and have the first opportunity in July at the business meeting."Blatter's call comes less than four months after Fifa general secretary Jerome Valcke said the door was "closed" on goal-line technology and video replays after a vote by the IFAB.The decision was reached after watching presentations of two systems, Cairos - a microchip inserted in a ball and Hawk-Eye - used in tennis and cricket.In a statement on Fifa's website after the verdict, Blatter argued that human errors were part of football's appeal."The game must be played in the same way no matter where you are in the world," he wrote. "The simplicity and universality of the game is one of the reasons for its success."No matter which technology is applied, at the end of the day a decision will have to be taken by a human being. This being the case, why remove the responsibility from the referee to give it to someone else?"The Fifa chief was in the crowd at Free State Stadium in Bloemfontein as referee Jorge Larrionda and his assistant Mauricio Espinosa failed to spot that Lampard's 38th-minute shot had dropped well over the line.German media have claimed the incident atones for the 1966 final when Geoff Hurst's strike for England against West Germany was allowed to stand, even though it was unclear whether the whole ball had crossed the line.