Arsenal are watching Real Valladolid defender Fernando Calero.

Cadena SER says Valladolid are resigned to losing Calero in January due to his relatively low buyout clause.

Calero can leave his LaLiga club for a knockdown €11m.

Arsenal are keen, along with Sevilla and Borussia Dortmund. The wing-back's deal runs to 2021.

Any interested club will be negotiating terms with Valladolid owner Ronaldo Nazario.