Hleb continued: "Moving to Barca is a great opportunity for me. I love the club and I want to try to win as many titles as possible.
"The style of play from Barca is fantastic. The games of FC Barcelona and Arsenal are the best in the world. I come from Arsenal and I know how to play attacking football."
Asked about fellow new signings Daniel Alves and Seydou Keita, Hleb added: "All the players are incredible and will be very important.
"In addition, we have a new coach and I think that with all these changes we can play very good football and win titles."