Gómez contributed two goals as Athletic reached the final of the 2011–12 UEFA Europa League – totalling seven appearances in the competition – scoring against FC Schalke 04 (2–2 home draw, 6–4 on aggregate) and Sporting CP (3–1 home victory, 4–3 aggregate win). He was definitely promoted to the first team for 2012–13, being given the number 11 jersey. On 17 November 2012, he scored his first league goal of the campaign, in a 5–1 defeat at Real Madrid.