The 17-year-old forward scored twice for Malaga against Real Zaragoza on Sunday.
Real Madrid and Barcelona are also keeping tabs on the youngster, according to The Mirror.
Juanmi recently signed a new five-year contract at Malaga.
Malaga boss Jesualdo Ferreira said: “He could go very far.”
Juanmi’s agent Javier Dieguez added: “This is not a surprise for us but for now he is focused on doing well for Malaga.”
