Billy Vunipola helped England reach last year’s World Cup final

England’s Billy Vunipola is “definitely staying” at Saracens despite their relegation from the Premiership.

Defending champions Sarries will be automatically demoted from the top flight at the end of the season following salary cap breaches.

But the number eight, who has won 51 international caps, has said he will remain with the north London club.

“The way I see, it’s part of the journey of the club,” the 27-year-old told RugbyPass.