La Liga
Joaquín Martínez 'Oso' has become one of the standout names in the Sevilla FC transfer market. The left-back, one of the great revelations of last season at Nervión, has attracted the interest of several European clubs just as his contract renewal remains completely blocked. With a contract until 2027, the homegrown player could leave the Ramón Sánchez-Pizjuán this summer if an offer close to the economic demands of the Seville club comes in.
Sevilla FC's need to generate income through sales makes the young defender a very attractive asset. While operations like those of Akor, Adams, or Rubén Vargas continue to progress, Oso's situation has taken on a special dimension due to the growing interest coming from Italy and the Premier League.
Oso puts Nottingham Forest and Fiorentina on alert
The bidding for the Alicante defender keeps growing. In recent weeks, Fiorentina had taken the lead with the intention of presenting an offer close to €12 million, convinced that the full-back has the ideal conditions to reinforce their squad for the upcoming season.
However, Nottingham Forest has come back strongly into the race for the player. According to various reports from England, the Premier League club has already had contacts with both the player's camp and Sevilla FC to understand the economic conditions of a potential deal.
The English club wants to get ahead of the competition and is seriously considering presenting a proposal that could convince all parties before the market advances.
Nottingham Forest have made direct club-to-club contact with Sevilla to discuss a proposal for left-back Oso. Forest keen on permanent transfer. #NFFC pic.twitter.com/UyWOyhfCw3
— Luca Bendoni (@LucaBendoni) July 13, 2026
The Premier League calls Nervión again
It would not be the first time that Nottingham Forest negotiates with the Seville club. Last summer, they reached an agreement to incorporate José Ángel Carmona through a deal valued at €11 million, although the defender ultimately refused to leave the Andalusian club. Now the English are once again interested in another left-back developed in the Nervión academy.
The economic potential of the Premier League poses a clear threat to Fiorentina, which will have to increase their efforts if they wish to stay in the running for the player.
Sevilla FC is willing to negotiate for around €15 million
Oso's contractual situation obliges the club to carefully consider any proposal. The full-back recently turned 23 years old and has not yet reached an agreement to extend a contract that expires in June 2027. Discussions began months ago with the aim of extending their association for another three seasons, but economic differences continue to keep both sides apart.
Sevilla FC made an initial offer to significantly improve his salary and increase his release clause, currently set at €20 million. However, the player's camp responded with a counteroffer that has not yet found consensus. Meanwhile, the Seville entity also lacks sufficient margin to register a new contract due to the delicate salary cap situation.
In this scenario, a sale close to €15 million appears as a very interesting alternative for the club's finances, especially considering that the player arrived four seasons ago completely free from Málaga's academy.

A season that changed his career
Although he had already debuted with the first team during the 2023/24 season in the Copa del Rey, it was the last season that definitively established Oso as one of the great promises of Spanish football.
The defender played 24 official matches, accumulated 1,648 minutes, scored two goals, and provided three assists, becoming a full-back with great offensive potential and a prominent physical ability to cover the entire left flank. His progress has even caught the attention of Lionel Scaloni, who closely follows his development with an eye on future call-ups to the Argentina national team.
In addition to the interest from Nottingham Forest and Fiorentina, other European clubs assessed his situation in recent weeks. Strasbourg ended up ruling out his signing after completing another transfer, while various LaLiga teams considered his name without submitting a formal proposal.
All signs point to a resolution for the full-back's future before the transfer window closes. If the renewal remains stalled and an offer reaches around €15 million, Sevilla FC will definitively open the door for his departure. Meanwhile, Oso remains one of the most sought-after youngsters in the Nervión squad and one of the most captivating names in this summer's transfer market.
This news is an automatic translation. You can read the original news, Cuidado Sevilla, la Premier también viene a por Oso
