The Bulldogs began a succession plan with reports they sounded out Josh Dugan and Jarryd Hayne about coming to the club, while it is believed disgruntled Canberra centre Blake Ferguson is also in Canterbury's sights.
But it appears Josh Morris - who has filled in admirably during Barba's stint on the sidelines with an ankle injury - could be the long-term solution in the No.1 jumper.
Brisbane's coup appears to be the first step in a revitalisation of the Broncos roster, with Raiders young gun Anthony Milford also believed to be in the club's sights.
Gold Coast and North Queensland also showed interest in Barba, but the Broncos were always odds-on favourites to secure his signature from the moment he announced he was keen to leave.
He is believed to have secured a significant pay rise as part of his move, with his Brisbane deal rumoured to be worth $500,000 a season.
The signing of Barba has left Josh Hoffman's future in limbo, with the New Zealand international having impressed in recent weeks since being reinstated to the Broncos fullback position.
The Broncos have already released halfback Peter Wallace to return to Penrith in 2014, while veteran playmaker Scott Prince this week announced he would retire at the end of the season.
-AAP