Manchester United and Newcastle United are closely monitoring the progress of Valencia midfielder Javi Guerra, according to Marca.
The 20-year-old has had a stellar start to the season, showcasing his skills with three goals and one assist in six league matches.
As a Spain under-21 international, Guerra recently signed a contract extension in May, committing to Valencia until the summer of 2027.
His contract includes a release clause set at €100 million.
Premier League clubs view Guerra as a valuable investment, not only for the current season but also for the long-term future.
Guerra made his professional debut in April and has since accumulated 16 appearances for Los Che.