Ander Barrenetxea

Barrenetxea made his debut for Sanse on 6 January 2019, scoring on his debut in the third tier in a 3–0 home victory over CD Izarra. He scored his first professional goal for the first team on 12 May, in a 3–1 home victory over Real Madrid CF.

On 9 June 2019, Barrenetxea was definitely promoted to the main squad of the Txuri-urdin.

He was selected for the 20-man Spain squad for the 2019 UEFA European Under-19 Championship. Barrenetxea came on as an 80th minute substitution as Spain beat Portugal 2–0 in the finals to be crowned winners of the competition.

In the 2018–19 season, he began to become involved in training with the senior team, while registered with the club's C-team playing in the amateur fourth tier. In early December 2018, he renewed his contract until 2025.

On 22 December 2018, Barrenetxea made his professional and La Liga debut as a late substitute in a 1–0 home loss against Deportivo Alavés. In so doing, he became the first player born in the 21st century to appear in the competition, the 26th-youngest debutant in the division overall, and Real Sociedad's youngest since the Spanish Civil War (behind only 15-year-old Pedro Irastorza in 1934). By coincidence, the player who left the field, Juanmi, was even younger when making his bow in the competition eight years earlier.

Barrenetxea was called up for the Spain Under-16 team in 2016 and 2017, and appeared for the Under-18s in November 2018. He also featured for the regional Basque Country in the same age groups.

Barrenetxea's rapid progression to the senior team made him the first youth product to appear at that level without already playing for the club's B-team, since Antoine Griezmann did so in 2009. Two days after his breakthrough, he was back playing with the C-team.

Ander Barrenetxea Muguruza (born 27 December 2001) is a Spanish professional footballer who plays for Real Sociedad as a forward or left winger.