Brilliant Brazil striker Neymar flew into Barcelona and signed a five-year contract amid great fanfare on Monday before announcing his priority was to help his idol Lionel Messi remain the world's best player.
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The 21-year-old, who is just under five years younger than Messi, will line up with the Argentine in a fearsome Barca attack next season after the Spanish champions beat arch-rivals Real Madrid in the race to lure him from Santos.
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After passing medical tests and penning a deal that ties him to Barca until June 2018, Neymar told the almost 60 000 fans who had turned up to welcome him at the Nou Camp stadium that playing for the club was a dream come true.
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"Barca is more than a club and a great team and I want to contribute to Messi staying the best for many years," he said.
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At a later news conference, he told reporters jamming the press room he had struggled to fight back the tears when he had walked out on to the pitch.
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"It is a great day for me and my family," he said.
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"Having the chance to play with so many important players whom I have admired since I was a child is something I have to thank god for.
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"I have never been concerned about winning the Ballon d'Or or being the best player in the world.
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"The best player is already here and that's Messi.
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And now I can see him from close up and help him."
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Neymar was accompanied by Barca vice president Josep Maria Bartomeu and sporting director Andoni Zubizarreta and Bartomeu revealed that Barca had paid 57 million euros ($74 million) to sign Neymar.
That is the main reason why he was bought in the first place. He would definately complement Lionel Messi