The 29-year-old pillar, Mako Vunipola, will continue to be linked to Saracens, a club he has been in for nine years and will remain in the second division next season.
Vunipola has shown himself to be an influential figure on and off the field for nearly a decade, playing an important role in the Sarries’ European and national success.
His progression at Allianz Park has made him an international mainstay for England, as well as winning six tests with the British & Irish Lions on tours of Australia and New Zealand.
The front row has made 168 appearances for the Sarries to date and enjoy the challenges ahead.
“This club has been very good to me and is very good to me,” he said.
“They took care of me, gave me the opportunity to be the player I have been and gave me the platform to continue improving.
“I have no doubt that the club will come back and fight for the championships and that is part of the reason why this decision was quite easy.”
“It was not very difficult for me, since I could see the group we had and the strength of the club. I have no doubt that we will attack this challenge as we have with the other challenges we have had before. “
Rugby Director Mark McCall said: “Mako is a world-class player who can combine an innate understanding of the game with a brutal physique and incredible skill set.
“The Vunipola family is an integral part of the Saracens history; Mako is a highly respected member of the team who shows genuine care for her teammates. We are delighted that you have compromised your future here. ”