It had also been assumed Thomas Leuluai would move from five-eighth to hooker next season. That might still be the case, but Leuluai has been one of the Warriors' best players in recent weeks.
Friend is showing signs of wear and tear after 12 seasons in the NRL - he has nerve damage in his shoulder - but has played the last 17 games this season and is an 80-minute player.
He has also been a key player in the Warriors' resurgence and has averaged close to 47 tackles - he sits on 793 tackles for the season and could tip over 1000 tackles in the final four games - and 50m a game.
He's not the sort to break a game open (five offloads and no linebreaks this season) but he rarely makes mistakes (eight errors) or takes the wrong option.
"It's fantastic to have my future sorted out here with the Vodafone Warriors," said Friend.
"While we looked at other options, this is where I wanted to be all along. I couldn't be happier staying with this club."
Head coach Matthew Elliott said securing Friend was a significant boost. "He brings a lot to our club both on the field and off it," he said.
"From the outset our attitude was that we wanted to be able to keep Nathan and we've been able to achieve it. That's brilliant for him and for his family as well as us and also our members and fans.
"It's never easy at times when players are in contract discussions but it's a huge credit to Friendy the way he has handled this situation."