McManus sidelined indefinitely for Newcastle Knights

Newcastle Knights wing James McManus will not take part in the upcoming NRL season following medical advice.

McManus has not played since leaving the field after sustaining a concussion just six minutes into the 52-6 defeat to the South Sydney Rabbitohs on July 25.

The 30-year-old, who has made three appearances for New South Wales in State of Origin during his career, had been rumoured to be set to retire as a result.

However, he has instead decided to take an indefinite break from the game in order to assess his options.

"I need rest and time to work through my options," McManus said in a statement. "This has been a difficult time and I certainly appreciate everyone's support."

McManus made his debut for the Knights in 2007 and has commenced work with the club's commercial team.