Valencia will reportedly return with a bid in the region of £25m to secure the signing of Benfica midfielder Enzo Perez.
The La Liga outfit, who have been taken over by Singapore businessman Peter Lim, have already seen one offer rejected by the Portuguese giants, but according to Superdeporte, that won't result in the Spaniards ending their interest.
Perez, who scored four goals in 40 appearances during Benfica's treble-winning campaign last season, is expected to attract many suitors during the summer, with Manchester United already reported to have enquired about his signature.
The 28-year-old is currently in Brazil as part of Argentina's World Cup squad.
