Arsenal and Manchester United are interested in Atlanta United's Argentina youngster Ezequiel Barco.
Record says Portuguese giants Sporting CP are weighing-up an approach for the 20-year-old.
According to the publication, Sporting view the Atlanta man as an ideal replacement for star playmaker Bruno Fernandes if they lose the Portugal international in January.
However, it is claimed that club could be faced with serious competition, with the Gunners and Red Devils also believed to have shown interest.
Barco, who is considered one of the South America's most exciting youngsters, joined Atlanta from Independiente for a reported $15million (£11.6m) fee in January 2018 - an MLS record at the time.
Despite seeing his season interrupted by injuries and international commitments, the midfielder finished the recent campaign with four goals and three assists in 15 MLS appearances for Atlanta.