Rugby Australia will hold a weekend hearing to determine whether its decision to terminate Israel Folau's contract can be upheld.
After Billy Vunipola was confronted by a fan in a Munster shirt on Saturday, the Irish province distanced themselves from the supporter.
Leinster remain on course to retain their European Champions Cup crown, but Garry Ringrose believes Saracens will be tough final opponents.
Holders Leinster will have the chance to retain their European Champions Cup crown after defeating Toulouse in Dublin on Sunday.
Morgan Parra kicked 16 points but Clermont Auvergne survived a late scare against Harlequins to progress in the European Challenge Cup.
La Rochelle progressed to the European Challenge Cup final for the first time as they edged past Sale Sharks in the last four.
After the controversy surrounding his support for Israel Folau, Billy Vunipola declared himself "grateful" to be playing for Saracens.
Thomas Banks' second-half try, converted by Christian Lealiifano, secured the Brumbies a 19-17 victory over the Stormers.
Michael Rhodes and Billy Vunipola scored tries but Owen Farrell's 22 points from the tee were key for Saracens against Munster.
Kurtley Beale started at full-back in place of Israel Folau and the Waratahs showed great spirit to overcome the Rebels at the SCG.
Franck Azema will become the longest-serving coach in Clermont Auvergne's history if he sees out a new deal until 2023.
Leinster will be led by the fit-again Johnny Sexton when they take on Toulouse in Sunday's European Champions Cup semi-final.
A second-half fightback was needed for the Hurricanes to avoid a shock defeat to the Sunwolves in Super Rugby.
England international Ben Te'o is one of eight players who will be leaving Sixways at the end of the Premiership season.
After a distinguished career with Ulster and Ireland, Rory Best will call time on his rugby union career after the World Cup.
Israel Folau is set to be sacked by Rugby Australia, yet Will Genia says the Wallabies can still win the Rugby World Cup.