Leinster and Ulster's Heineken Champions Cup quarter-finals will be played in mid-September, the organisers have announced.

Subject to coronavirus-prevention guidelines, four-time champions Leinster will face Saracens, and Ulster, the 1999 winners, will meet Toulouse on the weekend of 18/19/20 September with the two semi-finals taking place a week later.

Leo Cullen’s Leinster side, unbeaten before the shutdown, were originally due to host reigning champions Saracens in the Aviva Stadium on 4 April, while Dan McFarland’s Ulster outfit were down to play Toulouse in Le Stadium a day later. 

The exact dates, venues and kick-off times are to be confirmed but the EPCR website has the original venues listed. 

Clermont's clash with Racing 92, and Exeter versus Northampton are the other two knock-out ties.

The final is scheduled for Saturday 17 October, and organisers say they still intend to hold it and the Challenge Cup final in Marseille but this is "under review in light of public gathering and international travel restrictions which might be in place at the time of the finals".

Depending on the cororavirus situation at the time this would pave the way for a possible location change in the event that no French side reaches the decider. 

Next season's tournament is due to start on the weekend of 11/12/13 December. 

"EPCR and the local organising committee in Marseille intend to clarify the position regarding the finals, including details of ticket refunds where applicable, as soon as possible," they said in a statement. 

"As previously communicated, new Heineken Champions Cup and Challenge Cup tournament formats for the 2020/21 season are being considered as a consequence of widespread fixture disruption caused by the Covid-19 pandemic.

"A 24-club Heineken Champions Cup with eight representatives from each of Europe's leading league competitions is one of the options under discussion.

"Any changes would apply to next season’s tournaments, which are scheduled to start on the weekend of 11/12/13 December, only on an exceptional basis.

"An official announcement regarding formats will be made once all discussions are concluded."