After his short return in Brazil, the striker played for smaller clubs like, Al-Hilal, Ethnikos, Sport Club do Recife and Mogi Mirim Esporte Clube.
Ethnikos | Ethnikos Piraeus F.C. | Ethnikos Piraeus | Ethnikos G.S. Athens | Ethnikos Achna FC |
1905-06 was Ethnikos' first season of organised football, competing in the very first Panhellenic Championship, in which the club came first.
In July 2008, Sialmas signed a two-year deal with Ethnikos which lasted for only one.