The Süper Lig transfer window remains open. The Turkish Football Federation set September 4, 2026 as the deadline for the summer registration period, meaning further deals could still be completed. As of September 1, these are five of the most notable confirmed signings based on quality, investment and potential impact.
Top 5 Süper Lig Signings
The Turkish league made a major impact on the European transfer market, bringing in several high-profile names. Rafael Leão, Mason Greenwood, Orkun Kökçü and Dušan Vlahović headline a window in which Galatasaray, Fenerbahçe and Beşiktaş made some of the most ambitious moves in the competition.
Galatasaray completed one of the biggest moves of the summer by signing Rafael Leão from AC Milan. Transfermarkt lists the deal at around €38 million. The 27-year-old Portuguese winger signed a four-year contract after ending a seven-year spell in Italy. He recorded 80 goals and 65 assists in 291 appearances for Milan, while also winning the 2021/22 Serie A title and the Italian Super Cup. His pace, power and one-on-one ability add even more quality to an attack that already features Victor Osimhen.
Mason Greenwood – Fenerbahçe
Fenerbahçe made another major investment by signing Mason Greenwood from Olympique de Marseille. Transfermarkt records the transfer fee at €39 million, making it one of the largest outlays by a Turkish club during this window. The 24-year-old forward signed until June 2030 after two seasons in France. During his time at Marseille, he scored 37 goals in 66 Ligue 1 appearances, establishing himself as one of the league’s most productive attacking players. Greenwood can operate from the right, as a second striker or through the middle.
Mohamed Salah – Trabzonspor
After spending the previous season on loan at the club, Beşiktaş made Orkun Kökçü’s move from Benfica permanent. Transfermarkt lists the deal at €30 million, making it one of the biggest investments in the club’s history. The 25-year-old Turkey international signed until June 2030 and is expected to play a central role in midfield. His ability to dictate possession, break lines with his passing and threaten from long range makes him one of the key figures in Vincenzo Italiano’s new project.
Dušan Vlahović – Beşiktaş
Beşiktaş also took advantage of a major market opportunity by signing Dušan Vlahović on a free transfer after the Serbian striker left Juventus at the end of his contract. The 26-year-old signed a three-year deal through the end of the 2028/29 season. In his final campaign in Italy, he scored 10 goals in 23 appearances across Serie A and the Champions League. His physical presence, penalty-box movement and finishing ability give Beşiktaş an experienced international-level focal point in attack.
Leandro Trossard – Beşiktaş
Another major name to arrive in Istanbul was Leandro Trossard. Beşiktaş signed him permanently from Arsenal in a deal Transfermarkt values at €18 million. The 31-year-old Belgian signed a three-year contract with an option for a fourth. He ended his Arsenal spell after making 174 appearances and scoring 36 goals, bringing experience from the Premier League, Champions League and international football with Belgium. His ability to play as a winger, second striker or central forward gives Beşiktaş a highly versatile attacking option.
