1. Victor Osimhen - Napoli - €120 million
Napoli made a statement of intent with the signing of Victor Osimhen from Lille for a club-record fee of €120 million. The Nigerian striker had an impressive season in France and will be expected to lead the line for Napoli in the upcoming campaign.
2. Victor Bonifazi - Bayer Leverkusen - €40 million
Bayer Leverkusen secured the services of central defender Victor Bonifazi from SPAL for a fee of €40 million. The 24-year-old Italian is considered one of the most promising defenders in Serie A and will add depth to Leverkusen's backline.
3. Taiwo Awoniyi - Nottingham Forest - €30 million
Taiwo Awoniyi joined Nottingham Forest from Liverpool in a €30 million deal. The Nigerian forward has been loaned out several times by Liverpool in recent years and will now have a chance to prove himself at Forest.
4. Amadou Diawara - Atalanta - €30 million
Amadou Diawara made a switch from Roma to Atalanta for a fee of €30 million. The 24-year-old midfielder is known for his technical ability and passing range and will bolster Atalanta's midfield options.
5. Aleksandar Mitrovic - Fulham - €28 million
Aleksandar Mitrovic completed a move from Fulham to Atalanta for a fee of €28 million. The Serbian striker was Fulham's top scorer last season and will be hoping to continue his goalscoring form in Serie A.
6. Samuel Chukwueze - AC Milan - €25 million
AC Milan secured the signing of Nigerian winger Samuel Chukwueze from Villarreal for a fee of €25 million. Chukwueze had an impressive season with Villarreal, helping them win the Europa League, and will provide Milan with pace and creativity in attack.
7. Tariq Lamptey - Nice - €25 million
Nice splashed €25 million to bring in Tariq Lamptey from Brighton. The 20-year-old English right-back caught the attention of several clubs with his performances last season and will be looking to make an impact in Ligue 1.
8. Nathan Tella - Bayer Leverkusen - €23 million
Bayer Leverkusen signed Nathan Tella from Southampton in a €23 million deal. The 21-year-old Nigerian winger has shown promise at Southampton and will be hoping to take the next step in his career at Leverkusen.
9. Jeppe Isaksen Orban - Gent - €20 million
Gent secured the services of Danish striker Jeppe Isaksen Orban from Midtjylland for a fee of €20 million. The 22-year-old impressed in the Danish Superliga last season and will be aiming to make an impact in the Belgian Pro League.
10. Wilfred Ndidi - Leicester City - €18 million
Wilfred Ndidi completed a move from Leicester City to Inter Milan for a fee of €18 million. The Nigerian midfielder has been a key player for Leicester in recent seasons and will be hoping to continue his development at Inter.
These are just some of the notable transfers that have taken place in European football during the summer transfer window. With the new season fast approaching, fans will be eagerly awaiting the impact these signings will have on their respective clubs.