The 22 - year - old Gunners forward has played alongside Rooney on the international stage .
The 22 - year - old Gunners forward has witnessed first - hand how the Manchester United captain has torn teams apart -- both for England and his club .
The 22 - year - old Gunners forward has played alongside Rooney on the international stage and has witnessed first - hand how the Manchester United captain has torn teams apart -- both for England and his club .