Just last week O'Neill told FourFourTwo he was unconcerned about his future despite coming off contract at the end of the current campaign.

But the Sky Blues have since moved to tie up the Olyroo's future following a raft of compelling performances for Graham Arnold’s squad league-leading squad.

O'Neill unconcerned over contract future

The 22-year-old, who was nominated in October for the NAB Young Player of the Year award, said he is thrilled to be remaining at Sydney FC for another two seasons.

“I’m very happy here working with a fantastic set of players and with our brilliant coaching staff,” O'Neill.

“My game has developed so much in my first 18 months with the club and that’s thanks to the help and support of the people here as well as my team mates.

“I’m looking forward to spending the next two years of my career here and winning some silverware. It’s a very exciting time to be a Sydney FC player.”

O'Neill joined the Sky Blues on a two-year deal in 2015 from Perth Glory and Arnold believes the young midfielder has only just scratched the surface.

“Brandon has all the attributes to become a top class midfielder,” he said.  “He is still young and learning the game but has a real hunger and plays with a smile on his face.

“I am very pleased he will be with Sydney FC for the next two seasons as he will become an even greater asset to the club.

“He is a role model for any young and aspiring player out there and I’m certain he will see further success and recognition in his career.

“Sydney FC has a reputation for developing excellent young players and Brandon is following in those footsteps.”

O’Neill has played 45 games for the Sky Blues including 31 in the A-League and seven in each of the AFC Champions League and FFA Cup competitions, scoring two goals.