Atletico Madrid have rejected a £20.1million bid from Manchester United for goalkeeper Jan Oblak, reports Spanish publication AS.

AS further claims that Atletico will only entertain negotiations if any club is willing to match the Slovenian goalkeeper's £28.75m release clause.

The 22-year-old goalkeeper arrived at the Vicente Calderon from Benfica last summer and made 21 appearances in all competitions last term.

United are in the market for a long-term replacement for David de Gea, who is being tipped to join Real Madrid, especially after Iker Casillas' move to FC Porto after spending 25 years with the Spanish giants.