Leeds United ready to break transfer record for Sporting defender Ousmane Diomande

Leeds United are reportedly preparing the biggest transfer offer in the club's history as they step up their pursuit of Sporting CP defender Ousmane Diomande.

The newly-promoted Premier League side have identified the Ivory Coast international as their leading defensive target and appear willing to stretch their finances to secure his signature ahead of the 2026/27 campaign.

According to reports in Portugal, Leeds are prepared to submit an offer that could reach €50 million through bonuses, a figure that would comfortably surpass the club's current transfer record.

With competition growing from several Premier League rivals, Daniel Farke's side are attempting to position themselves at the front of the queue.

Portuguese newspaper A Bola reports that Leeds are "truly willing to go to extremes" in their efforts to land Diomande.

The proposed package would eclipse the fee paid for Georginio Rutter, who arrived from Hoffenheim in January 2023 for approximately €40.5 million and remains the club's most expensive signing.

A move worth up to €50 million would represent a major statement of intent from Leeds following their return to the Premier League.

It would also underline the importance the club places on strengthening central defence before the new season begins.

Having followed Leeds' recruitment strategy under the current ownership group, there has been a clear willingness to invest heavily in players viewed as long-term pillars rather than short-term solutions. Diomande appears to fit that profile.

Leeds are not alone in monitoring the 22-year-old defender.

Recent reports have linked Chelsea, Arsenal, Newcastle United, Bournemouth and Crystal Palace with the Sporting star.

Several of those clubs have tracked Diomande for months, with his combination of athleticism, composure in possession and physical presence making him one of the most sought-after centre-backs outside Europe's traditional elite.

However, Leeds may hold one significant advantage.

Reports indicate Diomande's preferred destination is the Premier League, a factor that could help the Whites remain competitive despite interest from clubs with more established European credentials.

While Leeds appear willing to reach the €50 million mark, Sporting's position remains strong.

The Portuguese club secured Diomande to a new contract until 2031 earlier this year and inserted an €80 million release clause into the agreement.

Although Sporting may ultimately negotiate below that figure, the timing of the World Cup creates additional uncertainty.

Diomande is currently away with Ivory Coast and strong performances on the international stage could further increase his market value.

That possibility may encourage Sporting to delay negotiations rather than rush towards a sale.

Leeds are expected to continue pushing for a breakthrough in negotiations as they seek to complete key business before pre-season preparations intensify.

The biggest uncertainty remains Sporting's valuation and whether the Portuguese club will consider offers below the €80 million release clause. Diomande's involvement at the World Cup could also influence both timing and price.

If Leeds are serious about completing the deal quickly, they may need to move before strong tournament performances attract even greater competition.

Would signing Ousmane Diomande for a club-record fee be the perfect statement of intent from Leeds United ahead of their Premier League return?