By Tom Blackburn

Everton and Porto are going head to head to sign Valencia centre-half Aymen Abdennour, according to a report.

The Mirror claim that it is likely Abdennour will be allowed to leave and Porto are keen on bringing the player in on a loan-to-buy option.

The report claims that Porto have offered to initially loan Abdennour for one season, and then have the option to buy the defender for a fixed price next summer.

Valencia news website Deporte Valenciano claimed recently that the Merseysiders were eyeing up the centre-back as they look to bring in another defender following the exit of John Stones.

Sky Sports’ Spanish football expert Balague revealed on Monday morning in a La Liga preview on the broadcaster’s website that cash-strapped Valencia are willing to sell a number of senior players and are keen for Everton to pursue their interest in Abdennour.

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The Turkish international played 29 times for Valencia last season as they limped to a poor 12th placed finish, while manager Gary Neville was sacked.

Abdennour joined Valencia at the end of last summer’s transfer window for £18.5million from Monaco, and has formed a strong partnership with Germany international Shkodran Mustafi.

Premier League rivals Arsenal have revealed they are in talks to sign Mustafi, while Brazilian centre-back Adelan Santos is also likely to leave.

The Toffees have already brought in Swansea captain Ashley Williams for a fee of around £12million but are in the market for another centre-back.

In other Everton transfer news, they are in talks to sign £15million striker that Steve Walsh has been tracking.