Silvio has developed into a key player for Braga since joining the club in 2010.
The full-back revealed that he will move to Spain after his side’s 1-0 defeat to Porto in the Europa League final.
“I confirm that I’m going to Atletico Madrid,” said the 23-year-old, according to PA. “This was my last game in the Braga shirt.
“I’m going to take on a very attractive challenge in Spain, where I hope to be happy.”