
Born in San Miguel in the metropolitan area of the Argentine capital Buenos Aires, Fernández came up through the youth ranks of local giants Boca Juniors. At the 35-time champions, he made the step up to the second team at the beginning of 2020 and finally made his professional debut in the first division in May 2021. He had previously been included in the senior squad for the first time in March of the same year in the first round of the national cup, which Boca went on to win that year.
At the beginning of 2022, Fernández moved to league rivals Tigre on a one-year loan to gain more playing experience. There, the robust and combative midfielder immediately became a regular and played a total of 42 competitive matches, starting an impressive 38 times.

After returning to Boca, Fernández became an integral part of the first-team squad from 2023 onwards and won the Argentine Supercopa in his very first game. Boca, who had won the league title while Fernández was on loan at Tigre, faced cup winners Patronato. The new Leverkusen signing, who is known for his accurate passing and intelligent play, was in the starting line-up for the 3-0 win and played a total of 78 minutes.
Before moving to Saudi Arabia in August 2024, where he played 38 times for Al-Qadsiah, he played another 63 competitive matches for Boca. This included an appearance in South America's biggest and most heated derby, the Superclásico between Boca and River Plate. One of his opponents in the 1-1 draw was his now new Werkself teammate Claudio Echeverri.

Fernández also has some experience at national team level. He won the South American U17 Championship in 2019. Last year, while playing in Saudi Arabia, he was selected for the Argentine squad for the Summer Olympics in Paris. There he once again met Echeverri, this time as a teammate. Together, the duo advanced to the quarter-finals, where they narrowly lost 1-0 to hosts France.
The paths of the two new Werkself Argentinians will now cross once again in Leverkusen. Fernández is very much looking forward to this new chapter: “Now I want to further my career in Europe at an internationally renowned club. Bayer 04 currently has three of my Argentinian colleagues in its squad: Exequiel Palacios, Alejo Sarco and Claudio Echeverri. They told me about the club culture and the high sporting standards here in Leverkusen. I am very confident that we will all achieve significant victories together.”

The United Nations International Day of Persons with Disabilities (IDPD) is celebrated worldwide on 3 December. Together with Bayer AG, Bayer 04 is once again setting an example for diversity and inclusion by lighting up the BayArena in purple in the evening.
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To celebrate the Werkself victory at Borussia Dortmund and to thank the fans for their fantastic support at the stadium and at home, Bayer 04 is reducing the price of all jerseys by up to 40 euros! What's more, player or customised printing is free with selection of the DFB Pokal badge and stylish Talcid sleeve logo. Special prizes will also be raffled among all purchasers. All promotions run exclusively on the Bayer 04 online shop until Wednesday, 3 December, 11:59 CET.
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For the second time in four days, Bayer 04 face Borussia Dortmund this Tuesday evening, 2 December (kick-off: 21:00 CET) - this time in the round of 16 of the DFB Pokal, with more than 7,000 fans supporting the Werkself at Signal Iduna Park. After the recent 2-1 defeat to BVB in the league, several cup stats provide hope of revenge for the Black and Reds. There are several reasons why Bayer 04 recommends getting to the round of 16 clash early, in which VAR will be in use, unlike in the previous rounds. Read on for further information on tonight’s game in our matchday news.
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Just three days on from the Bundesliga meeting in Leverkusen, Bayer 04 now visit Borussia Dortmund in the DFB Pokal on Tuesday (21:00 CET). Ahead of the game at the Signal Iduna Park, head coach Kasper Hjulmand spoke about how to approach this second encounter in 72 hours and a number of developments within the squad.
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