The 2025 summer football transfer window has seen an unusual early flurry of activity, significantly influenced by the upcoming new format of the FIFA Club World Cup. This major tournament prompted many top European clubs to finalize their player acquisitions sooner than usual, with a special transfer period commencing in early June, ahead of the traditional July 1st start. This urgency led to some of the season`s most expensive deals being concluded early, while other high-profile moves, like Arsenal`s pursuit of Sporting CP striker Viktor Gyokeres, are still pending. Let`s delve into the top five most costly transfers of the summer window so far, based on data from Transfermarkt:
5. Mohammed Kudus, Tottenham (€64 million)
Following a challenging Premier League season where they finished 17th, Tottenham Hotspur, now under Thomas Frank, have been busy reshaping their squad. Despite their league struggles, Spurs secured a UEFA Europa League final victory against Manchester United, which means they will also compete in the Champions League. Among their notable signings, Mohammed Kudus joined from West Ham for approximately €64 million, making him one of the most expensive acquisitions in Tottenham`s history, second only to Dominic Solanke.
4. Jamie Gittens, Chelsea (€64.5 million)
After a successful campaign that saw them win the UEFA Conference League and, crucially, the inaugural new-format FIFA Club World Cup, Chelsea has been active in the transfer market. Beyond bringing in talents like Brazilian wonderkid Estevao from Palmeiras and Joao Pedro from Brighton, the Blues secured Jamie Gittens from Borussia Dortmund for around €64.5 million. This move places Gittens among Chelsea`s most expensive signings, surpassing Christian Pulisic and entering the top ten in the club`s history.
3. Martin Zubimendi, Arsenal (€70 million)
Arsenal has emerged as one of Europe`s most active clubs this summer, with former Atlético Madrid sporting director Andrea Berta reportedly steering their recruitment strategy. While a deal for Viktor Gyokeres is anticipated, the Gunners have already completed a significant signing in midfielder Martin Zubimendi, who arrived from Real Sociedad for €70 million. Zubimendi is one of several new faces at the Emirates this summer, joining the likes of goalkeeper Kepa Arrizabalaga and midfielder Christian Norgaard.
2. Matheus Cunha, Manchester United (€75 million)
Manchester United consistently features in discussions about major transfers, and this summer is no exception. Despite a disappointing season culminating in a Europa League final defeat to Tottenham, the Red Devils are focused on strengthening, even while reportedly navigating financial constraints. They have made a significant acquisition, signing Matheus Cunha from Wolverhampton Wanderers for approximately €75 million, making him the second most expensive transfer of this window to date.
1. Florian Wirtz, Liverpool (€125 million)
Liverpool has arguably made the most impactful signing of the summer, securing former Bayer Leverkusen sensation Florian Wirtz for a staggering €125 million. This record-breaking fee makes Wirtz the most expensive transfer in the club`s history. Joining the 2024-25 Premier League champions, Wirtz arrives with immense expectations, having consistently impressed in Germany for years. This landmark transfer could be the catalyst for Liverpool`s aspirations for Champions League glory.
