Robbie Henshaw braces for Springbok duo and hint of the unknown

Leinster and Ireland star prepares to face Munster's World-Cup winning duo Damian de Allende and RG Snyder

Robbie Henshaw at Leinster squad training at UCD in Dublin. Picture: Ramsey Cardy/Sportsfile

Rugby returns this weekend and with it a whole pile of known unknowns.

What will it be like at an empty Aviva Stadium? Will the lack of supporters have an influence on refereeing decisions? How will the new breakdown interpretations be enforced? Will the provinces fly from the blocks or will there be false starts?