Saracens director of rugby Mark McCall has confirmed that England international Billy Vunipola will miss the entire Six Nations campaign following a broken forearm.
The 27-year-old sustained the injury during the opening minutes of the Champions Cup game between Saracens and Racing 92 and was left out of the England squad for the opening game of the Six Nations tournament against France.
"Obviously it's broken so it ranges from 16 weeks to a lot longer than that so we'll wait and see," said McCall.
This was the fourth time Vunipola has sustained an arm injury after he first suffered a right broken arm in January 2018 and then suffered a similar injury during England's summer tour of South Africa. He also broke his left arm during Champions Cup game against Glasgow Warriors and underwent a surgery.
Vunipola has played 51 Tests for England since his debut in 2013 and has been a regular starter since Eddie Jones took in charge of the side.
Following the game against France, England will lock horns with Scotland in the second round of the tournament on 8th February at BT Murrayfield Stadium.