#4 Lilian Thuram (€41.5 million)
Not many clubs these days will have a transfer listed in their 5 most expensive signings dating as old as Lilian Thuram's to Juventus. The Frenchman signed for a €41.5 million fee from Italian outfit Parma in the summer of 2001.
Lilian Thuram is regarded as one of the finest centre-backs of his generation, he made 204 appearances for the club over a span of 5 seasons. He clinched two Serie A titles and two Supercopa Italiana titles during his tenure in Turin.
He left Juventus for Barcelona in 2006 after making a name as one of the most feared defenders of the age across Europe. He was also one of the 100 players to make it into Pele's list of FIFA 100 in 2004.