Manchester United are fearful they could lose top young talent Angel Gomes after the 17-year-old stalled on signing his first professional contract with the club.
Gomes has one year left to run as a scholar at United and will be able to leave for a nominal fee once the year is up.
United's U18 Player of the Year last season, Gomes made his first-team debut in Wayne Rooney's last game at Old Trafford against Crystal Palace in May.
The Sun reports that Barcelona are monitoring the situation, with the hope they can sign the Englishman in the same way Juventus picked up Paul Pogba in 2012.