Real Madrid, Atletico Madrid and Valencia are all reportedly interested in signing Benfica goalkeeper Jan Oblak this summer.
The 21-year-old, who has been with Benfica since 2010, is widely regarded as one of the brightest young goalkeepers in European football.
According to A Bola, the Slovenian's agent has made the Primera Division trio aware that his client is available for transfer this summer.
However, it is understood that Benfica will not sanction a sale for any less than £16m, which is the youngster's release clause.
Oblak has made three appearances for his country.