The Spain international burst onto the scene in 2019, becoming the club's youngest debutant in 78 years when he featured in a 5-2 win against Betis aged 16 years and 298 days.
But all rumours were put to bed on Wednesday morning, when the starlet Fati as the new number 10 in the famous red and blue jersey.
After moving to Spain to join his father Bori, who made ends meet by picking olives, cleaning glasses in nightclubs and driving trucks, they found a base in Herrera and Fati spent two years with Sevilla before joining Barcelona's famed La Masia.
Even on the bench, Fati was influential, his warming-up on the side enough to send a jolt of electricity around Camp Nou, with Gerard Pique scoring the only goal of the game minutes later.