Cape Town - Real Betis are set to test Watford's resolve to hold onto Colombian hit-man Juan Camilo Hernandez, who is currently on loan at Huesca.
Seville-based newspaper Estadio Deportivo claim the 19-year-old talent is a prospect that 'most appeals to Betis' technical secretariat'.
The Hornets paid just €1.5million to sign him from a Colombian club in 2017 but reportedly believe he could now fetch up to €25 million after his impressive form on loan in Spain.
Hernandez, nicknamed 'Cucho', scored 16 goals and got six assists in the Segunda as Huesca were promoted last year and he has bagged three further goals in the top-flight.
But he has not renewed his contract with Watford, which will expire in 2020, which gives Betis hope of persuading the Hornets to part with him in the summer.
The Benito Villamarin club believe they can compete for talents such as Hernandez if they qualify for European competition again next season.