Manchester City and Chelsea have been encouraged to make a move for Paraguayan starlet Mauro Caballero after the player's father said he expects the young forward to play in Europe.
Caballero, 18, is rated as one of the most exciting young players in South America. He is currently on the books at Paraguayan club side Libertad.
A number of clubs, including Portuguese sides Benfica and Porto, are believed to have made enquiries about the teenager.
The player's father, also named Mauro Caballero, admits his son has received one concrete proposal ahead of the January transfer window but insists nothing has been decided.
Caballero Sr told Radio Cardinal AM: "The future of Mauro points to Europe. There is one great option for January but we cannot confirm anything yet."