James McManus says the Knights are relishing the underdogs tag in season 2015.

McManus announces retirement

Newcastle Knights winger James McManus has announced his NRL retirement due to health reasons.

McManus is proudly a one-club player who made his NRL debut in 2007 and went on to play 166 games for the Knights, scoring 72 tries.

Injury had sidelined the 30-year-old indefinitely this season, before he was medically advised to call fulltime.

"It is obviously a difficult decision but a decision I made for my young family," McManus admits.

"I could never have dreamed that when I moved from the Northern Territory to Newcastle, that I would have got to play one game let alone playing the game I love for ten years.

"I am very privileged to have played my whole career at the one club and I am very honoured to have worn the Newcastle Knights jersey."

Read more at newcastleknights.com.au