Sevilla FC Academy Star Oso Faces Contract Stalemate Amid First-Team Rise

The path from the youth ranks to the first team at Sevilla FC has become a vital lifeline for a club navigating a period of strict financial constraints. While the “cantera” has recently produced several success stories, reports suggest that the latest breakout star, Joaquín Martínez Gauna—better known as Oso—may be facing a crossroads in his contractual relationship with the Andalusian club.

Recent reports indicate that negotiations regarding a contract renewal for the young left-back have stalled. While the player is currently tied to the club through 2027, the stalemate comes at a time when Oso has transitioned from a promising reserve to a reliable first-team contributor in La Liga.

The Rise of Joaquín Martínez Gauna

Born in Torrevieja, Alicante, to Argentine parents, Oso’s journey to the Ramón Sánchez Pizjuán was not a direct one. He began his development at Algorfa CF before moving through Kelme CF and Real Murcia CF. His trajectory shifted upward in 2018 when he joined the youth system at Málaga CF.

Oso made his first senior appearance on October 12, 2021, playing the final 26 minutes of a 1–1 draw against CD Alhaurino for Málaga’s reserves in the Tercera División RFEF. He proved his scoring touch shortly after, netting the winning goal in a 3–2 victory over UD San Pedro on April 9, 2022.

Sevilla FC recognized the talent and signed the defender to a three-year contract on July 13, 2022. Initially placed with Sevilla Atlético in the Segunda Federación, Oso was converted into a left-back—a tactical shift that would eventually open the door to the first team.

Breaking Into the First Team

Oso’s ascent was gradual but steady. He spent the bulk of his early tenure with the B-team, amassing 65 appearances and scoring three goals. His first taste of the senior squad came on December 6, 2023, when he appeared as a late substitute for Manu Bueno in a 2–0 Copa del Rey win over Atlético Astorga FC.

The true turning point arrived on December 7, 2025. Oso made his professional La Liga debut, starting in a 1–1 away draw against Valencia CF at Mestalla. His performance in that match caught the attention of the Sevilla faithful, establishing him as a player capable of providing a different tactical dimension during periods of offensive stagnation.

As of December 7, 2025, Oso has recorded 12 appearances and one goal for the Sevilla first team, cementing his place as one of the most promising homegrown talents in the squad.

A Philosophy of Homegrown Talent

The current tension surrounding Oso’s contract exists within a broader club strategy. Over the last three seasons, Sevilla has leaned heavily on its academy to fill gaps in the roster, rewarding high-performing youth players with first-team opportunities.

Oso is the latest in a string of academy graduates to create the leap. He joins other success stories such as Isaac Romero, Kike Salas, José Ángel Carmona, and Manu Bueno. For these players, the academy is no longer just a training ground but a viable pathway to professional stability in one of Spain’s most demanding environments.

For those unfamiliar with the term, the “cantera” refers to the club’s youth academy system. In times of “war economy”—a term often used to describe Sevilla’s current need for financial austerity—these players are indispensable assets who provide high value without the heavy transfer fees associated with external signings.

Tactical Versatility and Impact

Standing at 1.83 meters (6 ft 0 in), Oso provides a physical presence that is often lacking in traditional left-backs. His ability to operate as a left-back, left wing-back, or left midfielder gives the coaching staff significant flexibility in their tactical setups.

This versatility allows Sevilla to shift formations mid-match, moving Oso higher up the pitch to provide width or dropping him deeper to solidify the defensive line. This proves this adaptability that has made him an “indisputable” part of the rotation during his recent run of games.

What’s Next for Oso?

While Oso renewed his link to the club until 2027 on February 23, 2024, the reported stagnation in current talks suggests a desire for updated terms that reflect his new status as a La Liga regular. Whether the club and the player can reach an agreement will be a key storyline for Sevilla as they continue to balance their books while remaining competitive.

The club’s ability to secure its young assets is critical. Losing a player of Oso’s profile would not only be a sporting blow but a symbolic one for the academy graduates following in his footsteps.

Fans and analysts will be watching closely to spot if a resolution is reached before the next transfer window. For now, Oso remains a pivotal piece of Sevilla’s defensive puzzle.

Stay tuned for official updates from Sevilla FC regarding contract developments.

What do you think about Sevilla’s reliance on the academy? Should Oso be a guaranteed starter? Let us know in the comments.