Slightly related and wanted to share; top 15 most expensive Milan players according to
Voetbalzone
15. Domenico Morfeo - Fiorentina - 1998- 20m
15. Andrea Bertolacci - Roma - 2015 - 20m
15. Mario Balotelli - Manchester City - 20m
12. Alexandre Pato - Internacional - 2007 - 22m
11. Clarence Seedorf - Inter - 2002 - 22.5m
10. Andriy Shevchenko - Dynamo Kiev - 1999 - 23m
9. Zlatan Ibrahimovic - Barcelona - 2011 - 24m
8. Alessio Romagnoli - Roma - 2015 - 25m
8. Alberto Gilardino - Parma - 2005 - 25m
8. Ronaldinho - Barcelona - 2008 - 25m
5. Franck Kessie - Atalanta Bergamo - 2017 - 28m
4. Carlos Bacca - Sevilla - 2015 - 30m
3. Alessandro Nesta - Lazio - 2002 - 30.5m
2. Filippo Inzaghi - Juventus - 2001 - 37m
1. Rui Costa - Fiorentina - 2001 - 42m