Giovani is renowned for his dribbling skills and eye for goal
Tottenham have completed the signing of Mexico international Giovani Dos Santos from Barcelona for an initial £4.7m.
That fee could rise to £8.6m depending on appearances and Giovani, 19, who has signed a five-year deal, said: "It's a dream to come to a big club like Spurs.
"I came here because of the passion of the fans, the size of the club and I can see us growing in the future."
Manager Juande Ramos added: "If Giovani progresses as we hope, he will be a terrific player. I'm delighted."
Barcelona have retained the right to 20% of any fee should the 19-year-old move on from Spurs in the first two years of his spell with the club, and they will get 10% of any fee if he is sold later in his contract.
But Ramos envisages the 19-year-old settling at White Hart Lane, saying: "This is a young player with a lot of potential, whom I have watched for some time.
Giovani possesses a great combination of physical power and explosivity, along with fine technical skills
Damien Comolli on Giovani
"For us it is an exciting signing because he has excellent quality, he operates well in different positions and, above all, is technically excellent."
Sporting Director Damien Comolli added: "Giovani possesses a great combination of physical power and explosivity, along with fine technical skills. He is someone who can create and score goals.
"He is young but not without experience and will be a great asset for the club. The fact we have a Spanish speaking coaching staff, as well as Gilberto, will help him adapt, settle quickly and I believe he has the skills to be successful in England."
Giovani joined Barcelona in 2002 and came through the youth ranks at the Nou Camp.
He broke into the first-team under former boss Frank Rijkaard last season and made 16 starts in all competitions and came on as a substitute 22 times in the campaign.
He also scored a hat-trick in the final league game of the season as Barca beat Murcia 5-3.
The winger, who can also play up front or behind a main striker, helped Mexico to win the World under-17 championship in Peru in 2005.
He is regarded as a promising talent but appears to have been allowed to leave by the Nou Camp outfit as they also have youngsters Lionel Messi and Bojan Krkic in their ranks.
South American football reporter Tim Vickery told BBC Sport: "He is the son of Brazil international Zizinho, but he plays for Mexico - and masterminded the 3-0 win over Brazil in the final of the 2005 World Under-17 Cup.
"He is a slight figure with a terrific burst of acceleration and he has a superb left foot."
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