Manchester United will rival Barcelona for the services of Dinamo Zagreb starlet Dani Olmo, according to Sport.
The 20-year-old winger, left Barca in 2014 to join the Croatian club and has since played 56 games in the top flight with scoring 11 goals and providing 14 assists.
Barcelona want to bring Olmo back but Manchester United, Marseille and Borussia Dortmund, are monitoring the situation closely.
Dinamo have already rejected a number of bids and they will sell the player for anything less than £22million.