West Ham have been linked with a move for the La Liga defender Unai Nunez.
According to AS (cited by Evening Standard), the Hammers are keeping tabs on the player who has a release clause of around £26.4m.
Issa Diop has been linked with a move away from West Ham and if the centre back ends up leaving the club, the Hammers will need a quality replacement.
The Athletic Bilbao defender is highly rated in Spain and he could be an excellent alternative.
West Ham have the means to pay the asking price for Nunez and it will be interesting to see if they make their move anytime soon.