The 27-year-old revealed he turned down a number of other offers in order to sign for the Serie A champions, and has set his sights on European glory
The Athletic Bilbao striker has signed an agreement to join the Serie A champions in the summer when his deal with the Liga side expires, and is hopeful of winning a number of trophies with Antonio Conte's side once he finally completes his protracted move.
"For me Athletic has been everything, my club for life, but I am going to the best team in Italy, to one of the best in Europe and the world. Triumphing at Juve is a dream, a great challenge for me," he told AS.
"I have had offers from many teams, but it is a very good project. Juve have strongly backed me from the first moment and I have been clear on that.
"I have always liked the competitive spirit of Italian teams; they are the best, and I think that they are the ideal team to try to win the Champions League.
"They’re a winning team, with the aim of winning many titles in the next few years. I see myself there and the future that awaits me excites me so much, and the method of playing that the team has, although I still don’t think about that because I am concentrating on Athletic."
Llorente has been left out Vicente del Bosque's latest Spain squad to face Uruguay this week, but is hoping to win back his place in the national team in time for the 2014 World Cup.
"It hurts me a lot (not being in the national team)," he added.
"For me it was very important to be there and at the moment I have missed out. I want to do things very well at Juve so that I can get back in the national squad ahead of the World Cup. That is my biggest challenge."