 In March 2009 Sidny terminated the contract and returned to Náutico until the end of 2009 Campeonato Brasileiro Série A. Náutico did not renew the contract as Sidny only played 10 league games for the club.In February 2010 Sidny signed a 1-year deal with Brasiliense.Sidny only 3 games in 2010 Campeonato Brasileiro Série B.