During his tenure at Sarries, Vunipola, 31, has made 194 appearances and won three European titles in addition to five Premiership crowns. He is thought to be among their all-time best players.
The team declared that the eight is going “for a new challenge” in order to confirm his exit.
Through the highs and lows, I’ve relished every moment of representing the people and this amazing club. It’s been an honor. For the rest of my life, I will cherish my time spent here, Vunipola declared.
Following his detention in Majorca last year, Vunipola received a formal warning from the Rugby Football Union and a caution from his club.