#3 Bojan Krkic — 17 years 19 days
Bojan Krkic broke several records held by Lionel Messi at the youth level. Such was his talent and promise, many predicted him to become as good as the Argentine winger.
Bojan even made his debut at an younger age than Leo did for Barcelona.
He made his debut in the 2007 season, where he scored 10 goals for the club. However, Bojan Krkic could not live up to the hype around him and crumbled to the pressure.
He started to fall into an abyss at the club and was soon seen spending his time outside the team. He left Barca to join AS Roma. In his globetrotting career, he has seen many leagues and currently plays for Vissel Kobe alongside former teammate Andres Iniesta.
#2 Ansu Fati — 16 years 9 months 25 days
Ansu Fati holds the following records to his name — The second-youngest player to feature for Barcelona in La Liga, the youngest player to feature of Barcelona in UCL, the youngest goalscorer and assist provider in the history of Barcelona.
Fati was promoted to the first-team after shining at the youth level. His addition was meant to give Barcelona more depth to their squad but the player soon became a vital player in the starting XI itself.
Alongside Messi, Fati established himself as one of Barcelona's biggest goal threats. He is currently considered to be one of the most promising young attackers in the game.
Fati is also the youngest player to feature in the UEFA Nations League, having done so for Spain. He was unlucky to be ruled out for nine months this season after being sidelined by injury.
However, he is back now and Xavi will be counting on him to deliver the goods at the club.
#1 Vicenç Martínez — 16 years 9 months 7 days
Vicenç Martínez holds an 80-year-old record at Barcelona. He made his debut against Real Madrid in 1941. The left-back gained a good reputation rather early on in his career.
However, he failed to establish a long career at Nou Camp. Martinez was loaned out to Sabadell for two years. His second spell was no better as he was ruled out once again via a knee injury. It all but ended his Barcelona career.
He went onto play short stints at six more clubs before hanging up his boots. Vicenç Martínez's is the youngest person ever to have donned a Barcelona jersey.