Benitez's interest in Aurelio underlines his ongoing commitment to strengthening Liverpool's playing staff ahead of next season.
The attacking defender, who is a set-piece expert, is likely to become the third recruit of the coming close season, with Chilean winger Mark Gonzales and Argentinian defender Gabriel Paletta already signed.
Last month wing-back Aurelio said he could not be certain that he would still be playing his football at the Mestalla next season, after contract negotiations failed to progress.