River Plate know Atletico Madrid are interested in talented midfielder Erik Lamela.

The teenager recently acquired an Italian passport and is represented by IMG, which also helped Atletico sign Sergio Aguero.

A River source told AS: "We know there is interest (from Atletico) in Lamela, but as yet we have not received a formal offer."

River want at least €18 million for Lamela, whose contract carries a €20 million buyout clause.