Details of Ulster and Leinster's Heineken Champions Cup quarter-finals, against Toulouse and Saracens repectively, have been confirmed.
Pool 1 toppers Leinster will host holders Saracens at the Aviva Stadium on Saturday, 19 September, kick-off 3pm, in a repeat of last season's final.
Sarries, who will play in the second tier of English rugby next season following a points deduction for salary cap breaches, emerged in second place from a group containing Racing 92 and Munster.
Organisers EPCR say that all matches will be subject to government "guidelines and restrictions" so confirmation of whether or not fans will be allowed to attend will not be known for a while.
Dan McFarland’s Ulster team, who qualified from Pool 3 as a best-runner up, will face the French side in Le Stadium in Toulouse on Sunday 20 September at 12.30pm (Irish time).
Currently, French government guidelines allow for crowds of 5,000 at an event.
Toulouse won all six of their pool matches.
The quarter-finals were originally due to be held in early April but postponed due to the coronavirus outbreak.
The all-French quarter-final between Clermont and Racing is fixed for the Stade Marcel-Michelin on 19 September at 5.30pm (Irish).
Sandy Park will host Exeter’s clash against Premiership rivals Northampton the following day with a kick-off time of 5.30pm.
All games will be shown on BT Sport.
The semi-finals will be held a week later with Leo Cullen's side, should they beat Saracens, down to play the winners of Clermont v Racing, while Exeter or Northampton will stand in the way of Ulster if they upset the odds against the four-time champions in Toulouse.
The final is scheduled for the weekend of 16/17/18October, with EPCR waiting until the finalists are known to confirm the venue.
Marseille had been due to host the final of both the Champions and the Challenge Cup but the city will now host the deciders in 2021.