The 19 year old has knocked back a contract placed on the table for him at Old Trafford after failing to command a regular first team place and has been in talks with the Seria A side.
The youngster, who has been with the United academy since 2009 after leaving Le Harve, has made just three appearances for the United first team last season after being tipped to become a big star in the future.
He used Twitter to say: "I am thinking about my future, I am in Italy with Juventus to discuss my transfer."