Having been the dominant force at home and abroad, Saracens' success is now facing significant scrutiny.
European Professional Club Rugby are not happy that Champions Cup holders Saracens were not represented at a launch event on Wednesday.
South Africa returned home from Japan to a rapturous reception from a nation still celebrating their Rugby World Cup triumph.
Steve Hansen enjoyed a hugely successful spell in charge of New Zealand and the search for his replacement is under way.
Saracens will appeal against what they described as "heavy-handed sanctions", insisting they are not guilty of any wrongdoing.
Premiership and European champions Saracens have been hit with huge sanctions for salary-cap breaches.
Makazole Mapimpi, Tendai Mtawarira, Lukhanyo Am and Herschel Jantjies are set to feature for the Barbarians at Twickenham.
There were four All Blacks and as many Japan players in the Opta team of the Rugby World Cup, but no world champions.