Transfermarkt have listed the most expensive signing of each Serie A club after 2019 summer transfer window.
Atalanta - Luis Muriel, transfer fee - €15 mln
Bologna - Riccardo Orsolini, transfer fee - €15 mln
Brescia - Jesse Joronen, transfer fee - €5 mln
Cagliari - Nathan Nandez, transfer fee - €18 mln
Juventus - Matthijs de Ligt, transfer fee - €85.5 mln
Fiorentina - Pedro, transfer fee - €11 mln
Lazio - Manuel Lazzari, transfer fee - €11 mln
Roma - Leonardo Spinazzola, transfer fee - €29.5 mln
Inter - Romelu Lukaku, transfer fee - €65 mln
Milan - Rafael Leao, transfer fee - €25 mln
Sassuolo - Manuel Locatelli, transfer fee - €10 mln
Sampdoria - Emil Audero, transfer fee - €20 mln
SPAL - Andrea Petagna, transfer fee - €5 mln
Udinese - Walace, transfer fee - €6 mln
Verona - Pawel Dawidowitcz, transfer fee - €3.5 mln
Napoli - Hirving Lozano, transfer fee - €38 mln
Genoa - Stefano Sturaro, transfer fee - €16.58 mln
Lecce - Khouma Babacar, transfer fee - €3.0 mln
Torino - Simone Zaza, transfer fee - €12 mln
Parma - Andrea Adorante, transfer fee - €5 mln
Image - FSA/MEN/Alfo Rex
Source - Transfermarkt