Nottingham Forest have completed the signing of Ivory Coast centre‑back Ousmane Diomande from Sporting CP, securing the 22‑year‑old defender on a four‑year contract. The club agreed to a fixed transfer fee of roughly £34.3 million (about €40 million) after an extended period of negotiations between the two parties.
The move was largely driven by Forest’s head coach Oliver Glasner, who had previously shown interest in Diomande when the player was still at Crystal Palace. Glasner’s admiration for the young defender’s qualities convinced the board to act decisively, and the deal was finally sealed this week. Diomande arrives at the City Ground with an impressive résumé. Over the past four seasons at Sporting, he accumulated 132 appearances, found the net seven times and contributed to two Primeira Liga titles.
His defensive solidity helped Sporting progress to the knockout phase of the UEFA Champions League, and he was also a key figure in the team’s domestic double during the 2024/25 campaign. On the international stage, Diomande has already earned 15 caps for the Ivory Coast senior side. He was part of the squad that lifted the Africa Cup of Nations in 2023 – the nation’s first triumph in eight years – and he featured in one match at the summer World Cup, gaining valuable experience on football’s biggest stage.
Speaking after his arrival, Diomande expressed genuine excitement about joining Forest: "I am very happy to be here. It is a historic club, and it motivates me to join such a club.
I believe we can achieve very good things this season and I am looking forward to meeting the players and head coach. I will give my best and all I can to help the team.
I cannot wait to meet the supporters at the City Ground and together we can have a good season." Chief Football Officer George Syrianos echoed the sentiment, highlighting the strategic fit of the signing: "We have been very clear on the profile of player we want to add to the squad, so we are excited to welcome Ousmane to the club. He has fantastic experience for a defender of his age.
Playing a crucial role in title‑winning teams and going into the latter stages of the Champions League puts him in a great position to integrate well here at Forest. Ousmane is a powerful, commanding defender, and arrives here with a winning mentality. He shares the same ambition for success we have, and we are excited to see the impact he can have in a Forest shirt." Diomande’s attributes suit Forest’s aspirations.
Standing tall and possessing a physical presence, he excels in aerial duels and is comfortable distributing the ball from the back. His time at Sporting under several high‑profile managers has refined his tactical awareness, enabling him to read the game effectively and organise the defensive line. Moreover, his experience in high‑pressure environments – such as Champions League knockout rounds and continental tournaments – equips him with the mental resilience required to thrive in the demanding atmosphere of the English Premier League. The transfer also reflects a broader trend of Premier League clubs investing in young, proven talent from Southern Europe.
By securing a defender who has already demonstrated his ability to win trophies and compete at the highest European level, Forest signal their intent to challenge for higher league positions and possibly European qualification in the near future. Beyond the headline signing, the announcement listed a series of other movements in the transfer market, including undisclosed deals for Boyd Fraser (Hearts) and Mason Ayre (Glentoran), free transfers for Xaver Schlager (RB Leipzig), Grady McDonnell (Club Brugge), Kasen Brown (Man City) and several others, as well as releases of players such as Willy Boly and Stefan Ortega. These additional transactions illustrate the club’s ongoing efforts to reshape the squad and balance the books while reinforcing key areas. For Forest supporters, Diomande’s arrival is expected to bolster a back‑line that has shown moments of vulnerability in recent seasons.
His leadership qualities, combined with his youthful energy, should provide a solid foundation for the team’s defensive structure. Fans are eager to see how quickly he adapts to the physicality and pace of English football, but the consensus among the coaching staff is that his technical proficiency and experience will ease the transition. In summary, Nottingham Forest have invested a substantial sum to bring Ousmane Diomande to the City Ground, betting on his proven track record, international pedigree, and winning mindset to help the club achieve its ambitions.
The four‑year contract signals a long‑term commitment, and both the player and the club have expressed optimism that this partnership will yield success on and off the pitch. The upcoming season will be the first real test of how Diomande integrates into the squad, but early reactions suggest that his presence could be a catalyst for a more resilient and competitive Forest side.