Joao Miranda has asked Atletico Madrid to consider his sale.
The Brazil defender has been the subject of intense interest from Manchester United, while Napoli are also keen.
El Mundo Deportivo says with the summer market now formally open and Diego Costa's sale to Chelsea confirmed, Atletico's transfer plans will intensify.
Miranda is among those players on the agenda and he has asked the board to accept offers if certain clubs bid this summer.
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