Navarro, 20, has established himself this season at Villarreal, having made 21 appearances.
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ASsays Atlético Madrid have been following his progress this term.
Atlético have recently changed its transfer policy with a focus on bringing in more Spanish talent.
However, there is competition for Navarro. Several Premier League clubs are also showing interest.
Navarro has a deal with Villarreal to 2030.
