Brazilian centre-back Bressan is to stay at Gremio after a potential loan move to Queens Park Rangers fell through.
Sunderland have confirmed the departure of French defender Modibo Diakite, who has left the club by mutual consent.
Juventus goalkeeper Gianluigi Buffon is close to agreeing a short-term contract extension with the Serie A champions.
Buffon recently registered his 100th appearance in European competition as Juve qualified for the last 16 of the Champions League, but revealed he is not seeking a long contract.
The 34-year-old told juventus.com: "We need to speak about its length.
"I want it to be a short-term deal because I don't need reassurance; on the contrary, I think it's better to have motivation. In any case we're down to the final details."