It came from Globo Esporte, who are one of the most reliable sources for anything relating to Brazilian players.
Alves to us makes complete sense and I voiced my opinion on this a couple of weeks ago -
https://forums.bluemoon-mcfc.co.uk/threads/joao-cancelo.334787/page-88#post-11896423
He's still quality, will add huge experience/winning mentality to the dressing room, knows Pep's system/requirements in and out, and is free to boot.
He's a risk given his age, but he's proved just this summer he's still capable of playing at the highest level by winning player of the tournament at the Copa. He was immense. We have two talented RB's in the academy (Alpha's current training with the 1st team I believe) and Maffeo could still turn it around (we still have a buy back), so we have options should Alves really decline in a season or so time.
We need someone that is a reliable back up option and can keep Walker on his toes. We don't need to go out and splurge £50m on another RB.