The 19-year-old impressed with several eye-catching performances in the A-League last season at the now defunct Gold Coast, and was being chased by the likes of Melbourne Victory and Sydney FC.

Halloran said the chance to play for the back-to-back champions and the Roar's culture were key reasons for his decision.

"I have pretty strong ties with Brisbane, I lived for majority of childhood before I moved to the Gold Coast," he said.

"From a football standpoint Brisbane's record stands for itself, they've been champions for the past two seasons and play the best football in the competition.

"From my understanding the culture at the club is really professional and has European feel about how it's run.

"The way Brisbane play is the way I like to play, they play a real possession style and always have the ball.

"Other teams play a lot more on the counter attack and it's a lot more difficult to launch attacks on goal from so much deeper. I like to go forward and I like to see a lot of the ball in forward positions."

Halloran also said he was looking forward to playing with the likes of Thomas Broich and Besart Berisha, who have both come to Australia after stints in Europe.

Roar coach Rado Vidosic said he expected Halloran to develop into an even better player, and added it was the first step in 'refreshing' his team.

"Ben is very skilful, young and going to fit into our game plan perfectly. We want to refresh the team a little bit and get some different dimensions to our play," Vidosic said.

"He fits perfectly in our plans and we believe with our way of training he's going to develop even more and be an even more exciting player.

"The advice he's got for his personal development is it's best to come to Brisbane because of the game we play.

"With us he's going to continue his education, and reach his full potential much quicker."