Morata, who recently but cut short his honeymoon to resolve his future, is expected to finally join Manchester United later on in the summer but this admission by Perez may mean that there is no agreement yet in place.
"I don't think we're in negotiations with Manchester United, which is not to say that there are people around him who are talking, which is normal", he told esRadio's El Primer Palo (h/t Ewan Roberts of Metro).
"He is one of the best players in the world, he belongs to Madrid and Madrid players do not leave when they want to or their parents wants them to", he declared.More news: India, Portugal sign new agreements in 'taxation'
Such a figure would see Morata become the second most expensive transfer in United's history and Mourinho's unlikely to sanction such a move.
"The 25-year-old was forced to sit on the sidelines last season and now lies behind Toni Kroos, Luka Modric, Mateo Kovacic and Isco in the pecking order at the Bernabeu".
The Colombia worldwide is not part of Zinedine Zidane's plans and asked to be sold so he could get more regular playing time.More news: The best 'Call of Duty' game ever is coming to PlayStation 4
When it comes to more local rivals United intend to beat Man City in the race to sign Nelson Semedo and have tabled a £30m bid for the Benfica right-back. Diario Gol claims that the striker could be signed by Manchester United within the next 48 hours. United's offer, therefore, seems to be some way off the mark but it's believed that the Red Devils are just testing the water and they are prepared to go much higher, particularly if City come calling.More news: Halle Open: Roger Federer cruises past defending champ Florian Mayer into semis