Brazilian midfielder signs a one-year loan deal with the Turkish outfit who have a right to make the move permanent at the end of the 2011-12 season for a fee of €13m
The 28-year-old Brazilian midfielder recently claimed he would be leaving the club after he was left out of their pre-season tour of the United States.
Melo was told he was no longer part of the plans for the new season and had been previously linked with German club Borussia Dortmund.
However, the Bundesliga side made it clear that they were not interested, leaving Galatasaray free to swoop.
The Turkish outfit confirmed they were in talks for a loan deal late on Thursday night, and the Italians have now announced the move officially.
A statement of Juventus' official website reads:
"Juventus Football Club S.p.A. announces that the agreement with Galatasaray Sportif Sinai Ve Ticari Yatirimlar A.S. for the temporary disposal of the registration rights of the player Felipe Melo De Carvalho has been reached. The contract envisages the payment by Galatasaray of €1.5 million in three instalments to be paid during 2011-2012 financial year.
"The agreement also includes the option right, to be exercised by Galatasaray within May 31, 2012, for the definitive acquisition of the football player at a price of €13 million."
Melo joined Juventus from Fiorentina in 2009 for €25 million.