G.D. Estoril Praia
Born in Lisbon, Bastos Lopes progressed through S.L. Benfica's youth system, arriving in the first team after a loan spell at neighbouring G.D. Estoril Praia. However, due to stiff competition from Humberto Coelho and António Oliveira in defense and Shéu and Glenn Strömberg in midfield, he appeared only as a substitute on most occasions; additionally, he was loaned to G.D. Estoril-Praia for the 1979–80 season, and to C.F. Os Belenenses for 1984–85.