TuttoJuve says the Brazil international has welcomed transfer talk linking him with a summer move to Old Trafford.
Douglas Costa 'liked' a story from 'Sport Musing' discussing the prospect of him moving to United. He would later 'unlike' the post.
The actions of the midfielder come just days after reports of tension with Juve management after a car accident on Monday and then his decision to leave the country to attend PSG star Neymar's birthday party.
It's understood Douglas Costa is a favourite of United chief Ed Woodward.