The highly-rated 23-year-old was watched by United scouts in Sporting’s 2-1 Europa League loss at Everton on Tuesday, according to the Sunday Mirror.
The versatile Portuguese star can operate in central defence as well as a defensive midfield role.
United assistant manager Mike Phelan told a Portuguese sports newspaper: “We know Veloso well, including from the time he played against us. He is an excellent midfielder, with great potential.”
