The father of four flew to Thailand on Monday night to seek treatment after it was revealed he returned a second positive test for cocaine.
Barba, who tested positive four days after starring in Cronulla’s maiden grand final victory, has been handed a 12-match ban by the NRL.
He was released from his deal with the Sharks to allow him to address personal issues, however it is understood the Sharks have already discussed a revised deal if the former Dally M Medalist can conquer his demons.
