Middlesbrough are reportedly close to signing former Manchester City striker Alvaro Negredo.
Spanish football expert Guillem Balague has claimed on Twitter that the newly-promoted club are in "advanced talks" with Negredo.
The 30-year-old joined Valencia on a permanent basis last summer after completing a season-long loan at the Mestalla Stadium.
Balague tweeted: "Ambitious @Boro in advanced talks with @AlvaroNegredo_7. IF terms + fee agreed with Valencia, most of Karanka's job would be done this early."