<page_title> List of most expensive association football transfers </page_title> <section_title> Historical progression </section_title> <table> <cell> 1998 <col_header> Year </col_header> </cell> <cell> Brazil Denílson <col_header> Player </col_header> </cell> <cell> Brazil São Paulo <col_header> Selling club </col_header> </cell> <cell> Spain Real Betis <col_header> Buying club </col_header> </cell> </table>
Denílson de Oliveira Araújo from São Paulo became one of the world's most expensive player when he signed for Real Betis in 1998.