In 2007, he returned to Brazil signing with Santos and quickly established himself with the club helping them to the 2007 Campeonato Paulista title.
In August 2008, Adaílton renewed his contract with Santos, until December 2009 and signed in February 2010 for FC Sion.
As the club was relegated from the Chinese Super League, Adaílton returned to Sion during the next transfer window in the winter of 2013.
Adaílton featured regularly for Chiasso in his one season at the club making 26 league appearances and scoring two goals.
[3] Adaílton was a member the Brazil national under-20 football team that captured the 2003 FIFA World Youth Championship.