Passage: The summer 2006 off-season marked a turbulent time as the club's presidential elections were held. Ramón Calderón became the new Real president. As expected, none of the club officials who served under the previous president was kept, including head coach López Caro. Initially out of favour with newly arrived head coach Fabio Capello, Beckham started only a few games at the beginning of the season, as the speedier José Antonio Reyes was normally preferred on the right wing. Of the first nine matches Beckham started, Real lost seven. On 10 January 2007, after prolonged contractual negotiations, Real Madrid's sporting director Predrag Mijatović announced that Beckham would not remain at Real Madrid after the end of the season. However, he later claimed that he was mistranslated and that he actually said that Beckham's contract had not yet been renewed.On 11 January 2007, Beckham announced that he had signed a five-year deal to play for the LA Galaxy beginning 1 July 2007. On 13 January 2007, Fabio Capello said that Beckham had played his last game for Real Madrid, although he continued to train with the team. A few days later, while speaking to the students at Villanueva University Center in Madrid, Calderón said that Beckham is "going to Hollywood to be half a film star", adding "our technical staff were right not to extend his contract, which has been proved by the fact that no other technical staff in the world wanted him except Los Angeles".About a month later, however, Capello backtracked on his earlier statement, allowing Beckham to rejoin the team for the match against Real Sociedad on 10 February 2007. The player immediately repaid his head coach's trust by scoring the equalising goal from a 27-yard free kick, as Real Madrid eventually recorded a 2–1 victory. In his final UEFA Champions League appearance for the club, Real Madrid were knocked out of the competition by Bayern Munich at the round-of-16 stage (on the away goals rule) on 7 March 2007. Beckham played a pivotal role in all three Madrid goals...

Question: What is the last name of the person who is in charge of Real Madrid?
Mijatović