Nottingham Forest have reached agreement to sign Ivory Coast centre‑back Ousmane Diomande from Sporting, with multiple outlets reporting a package of around €40m (circa £34m).
- Multiple outlets report Forest agreed a deal for Ousmane Diomande from Sporting worth around €40m/£34m.
- Reporting varies on exact fee structure: some sources cite add‑ons and a sell‑on clause while others give a single reported figure.
- Diomande is expected to occupy the right‑side centre‑back role in Oliver Glasner’s three‑man defence.
What has been reported
Several news organisations covering Forest’s summer activity say the 22‑year‑old has been targeted to strengthen Oliver Glasner’s defence. The Guardian reported Forest have signed Diomande for a fee reported to be £34.2m and that the player has agreed a four‑year contract with an option for a further year. Portuguese and UK outlets including A Bola, the BBC, the Nottingham Post, Empire of the Kop and Football FanCast described the valuation as roughly €40m/£34m, with some local reports adding potential add‑ons and a sell‑on clause.
Background on the player
Diomande began his professional career in Denmark with FC Midtjylland before moving to Sporting in January 2023. Sources note he made more than 130 appearances for Sporting across competitions and was a regular in their recent Champions League campaign, including starting in the quarter‑final matches against Arsenal. He was also part of Ivory Coast’s World Cup squad and played in their group win against Curaçao, according to match reports.
How he fits at Forest
Reporting indicates Forest see Diomande as a right‑sided centre‑back in the three‑man defence Oliver Glasner prefers. Local coverage suggests the club envisage him forming a partnership with Nikola Milenkovic and Murillo in Glasner’s system. Analysts writing about the transfer highlighted Diomande’s 1v1 defending and low successful take‑on rate against him last season in Portugal as attributes that suit a back three.
Deal structure and financial context
Different outlets offer slightly varied breakdowns. The Nottingham Post cited A Bola reporting an initial fee of €40m with potential add‑ons taking the package to €45m and a 10% sell‑on clause; other reports suggested the headline figure could be nearer £30m with bonuses increasing the total closer to £35m. The Guardian gave a specific reported figure of £34.2m and said the contract length is four years plus an option for an extra year.
Forest’s recruitment this summer follows the club receiving a significant incoming transfer fee for Elliot Anderson, which multiple commentators have said has given the club funds to reinvest. Financial observers have also noted ongoing Squad Cost Ratio and regulatory considerations for Forest in recent weeks, and some industry commentary has flagged that reinvestment activity is being watched from a regulatory perspective.
Confirmed, advanced talks and rumours — separating the evidence
- Confirmed: Across several outlets the transfer is reported as agreed and imminent, with the Guardian explicitly stating Forest have signed Diomande and other regional outlets reporting completion or that paperwork and payment details remained to be finalised.
- Advanced talks: Fabrizio Romano (reported via Empire of the Kop) and the BBC described Forest as in advanced negotiations, with a proposal said to be valued at around €40m/£34.1m.
- Variations: The precise fee and payment structure differ between reports — some mention a base €40m plus add‑ons, others list lower base figures with potential bonuses. These differences are attributed to varying sources and reporting on negotiation specifics.
Why the signing matters
If completed as reported, Diomande would be one of Forest’s higher‑value signings and a key piece in Glasner’s plans to stabilise the club defensively after a period of managerial transition. The transfer would also reflect Forest’s intent to use significant transfer income to reinvest in the squad ahead of the 2026/27 Premier League campaign.
What happens next
Sources indicate the outstanding items at the time of reporting included finalising payment mechanics and completing any required medical and registration formalities. The Nottingham Post noted that, had those details been settled in time, Diomande could have featured in a friendly against Sporting at the end of Forest’s Portuguese training camp. The Guardian’s coverage implies a contract has been agreed, while other outlets described the deal as imminent pending paperwork.
Timeline of reporting
- Mid‑July: Reports emerge of Forest’s interest and a proposal around €40m, with Fabrizio Romano and several outlets placing the clubs in advanced talks.
- Late July/early August: Local and national outlets report that clubs are finalising payment terms and that an agreement is close or complete; specifics of the fee and add‑ons vary between reports.
- 11 August: The Guardian published an article stating Forest have signed Diomande and providing a reported fee of approximately £34.2m and contract length.
Key takeaways
- Multiple reputable outlets report Nottingham Forest have reached agreement to sign Ousmane Diomande from Sporting for a package widely reported at around €40m (circa £34m).
- Sources differ slightly on the exact fee structure and timing; some accounts mention add‑ons and a sell‑on clause while others state a flat reported figure.
- Forest expect Diomande to play on the right of a three‑man defence under Oliver Glasner and view the signing as a major defensive addition.
“Forest have signed Côte d’Ivoire defender Ousmane Diomande from Sporting for an undisclosed fee, reported to be £34.2m.” — The Guardian
We will update this story as clubs publish formal confirmations or provide full contract and transfer details.