Barcelona reportedly rejected the chance to sign Federico Cartabia when the winger was just 13.
The 20-year-old, who is currently with Valencia, has made an big impression at the Mestalla with some exciting performances in the early stages of the season.
However, according to Mundo Deportivo, the playmaker could have been turning out for the league champions had the Catalan outfit taken up the option to acquire his services seven years ago.
'Fede' subsequently came through the Valencia youth system.