 He was often compared to Ronaldinho due to physical resemblance and for playing in the same position, having even been invited to portray Ronaldinho in his early days in a movie.In January 2006, after a stellar 2005 FIFA U-17 World Championship in Peru, where he scored twice for eventual finalists Brazil, both of the goals coming in the knockout stages, Celsinho was bought by Russian club FC Lokomotiv Moscow from Associação Portuguesa de Desportos, where he failed to settle overall due to climate, the overall roughness of football and a bad personal relationship with the team's coach.Celsinho joined Sporting Clube de Portugal in the 2007 summer, being loaned with the option for a permanent deal.