England confirm Billy Vunipola is in line to return against Scotland

• No8 played for Saracens at weekend after three months out with knee injury• Vunipola needs to prove fitness to Eddie Jones ahead of Six Nations encounterEngland have confirmed Billy Vunipola is in contention to face Scotland in Saturday’s Calcutta Cup match at Twickenham.Vunipola marked his comeback after three months out with a knee injury by playing 72 minutes of Saracens’ Premiership victory over Newcastle on Sunday, demonstrating his fitness in time for the final two rounds of the Six Nations. England have sorely missed their most dangerous ball carrier since he ruptured ligaments in the…