who has the last name Ferreira and scored 20 oals in the league, between 1997-98?
1997–98 FC Barcelona season:  He introduced Barcelona to his marvelous 4-3-3 formation, in which Rivaldo was a perfect centre forward, scoring 20 goals in the league. Rivaldo: Rivaldo Vítor Borba Ferreira (born 19 April 1972), known as Rivaldo (] ), is a Brazilian former professional footballer and the current president of Mogi Mirim Esporte Clube in Brazil.
Rivaldo