Javier Mascherano has completed his move from Liverpool to Barcelona after successfully undergoing a medical at the club.
The Argentina international underwent separate tests at the Hospital de Barcelona and at the Nou Camp earlier on Monday and, after getting the thumbs up from Barcelona's medical team, he signed a four-year contract with the Spanish champions.
Club doctor Ricard Pruna told Barca TV: "It was an exhaustive medical that lasted around five hours. He is in excellent condition and is physically great."
He added: "His cardiovascular level is perfect and he is a player who has had very few injuries. In the last five years he has suffered one injury that has left him with problems."
The 26-year-old Mascherano will reportedly cost Barca 22million euros (£18million).
Mascherano will wear the number 14 shirt with Barca, which was previously the number worn by Thierry Henry prior to the Frenchman's departure this summer.