Manchester United have reportedly identified Sporting Lisbon youngster Nuno Mendes as a potential transfer target.
Despite being just 18 years of age, Mendes has already established himself in the Sporting first team, making a total of 10 starts this season.
However, the emergence of the left-sided player has inevitably led to interest from elsewhere, including from Real Madrid and Juventus.
According to O Jogo, United are also weighing up a big-money approach for the teenager in 2021.
The Premier League giants have a history of doing business with their Portuguese counterparts, having previously signed Cristiano Ronaldo, Nani and Bruno Fernandes.
After recently penning a five-year contract, Mendes is valued in the region of £40m.