Paul Pogba has rejoined Juventus on a free transfer after his Manchester United contract expired.
He flew in to Turin on Friday for his medical before the announcement on Monday.
Pogba had not featured for United since April after struggling with injury and sporadic form.
Juventus said: "When we say goodbye after an intense adventure shared together, there is always a glimmer of hope that we will see each other again, sooner or later.
"He left as a boy and returns as a man and a champion, but there is one thing that has not changed - the desire to write unforgettable pages of club history together once more.