The jailed centre-back will begin his reintroduction to society by taking coaching sessions with FCB's second-string side after being convicted of arson in 2012
The Brazilian was sentenced to three years and nine months behind bars in July 2012 after being convicted of arson, having set fire to his rented villa.
"With this step, Breno has the chance to re-integrate himself back into society as soon as possible," the spokesman told Focus magazine.
Contrary to reports, the representative from Stadelheim prison went on to deny that any offer of work had been made to Breno by either Nuremberg or Sao Paulo, stating: "This was never the case."
The prison's decision to grant Breno day release has come amidst calls for him to be released entirely, including a plea from Brazilian national coach Luis Felipe Scolari, who suggested the player should be allowed to return to his native Brazil only last week.