With his contract remaining unsigned, despote terms being agreed over two months ago, the 30-year-old Argentina international continues to be linked with a move to Manchester City.
Barcelona star now has less than a year to run on his current contract, but Braida insists the Catalan club are calm.
“Messi is a real champion, one of the best,” he told Tuttosport.
“He’s a unique player, a huge player who has Barcelona in his heart. That’s why I think he will not budge.”