England's Vunipola to leave Saracens

England international Billy Vunipola will leave Saracens at the end of the season after 11 years at the club.

Vunipola, 31, has made 194 appearances and won the five Premiership titles and three European titles during his time at Sarries. He is regarded as one of their greatest ever players.

Confirming his departure, the club announced that the number eight is leaving "for a new challenge".

"It's been a honour to represent the people and this great club, through the highs and lows I've enjoyed it all. I will treasure my time here for the rest of my life," Vunipola said.