Glasgow Warriors felt it worked best for Danny Wilson to start work early, and for Dave Rennie to depart for his new job as Australia coach.
Jonah Holmes is heading for Wales to join Top 14 side the Dragons after three seasons with Leicester Tigers.
George Kruis has secured a move to Japanese side Panasonic Wild Knights, but it may not spell the end of the road with England.
With travel restrictions in place around the world, Australia could be a hub for the Rugby Championship.
Discussions are ongoing over whether the Sunwolves can face Australian Super Rugby sides in an alternative competition.
Izack Rodda, Isaac Lucas and Harry Hockings were released from their RA and Reds contracts on Saturday.
A new global rugby union calendar is being discussed by 10 of the leading nations in the Northern and Southern Hemispheres.
The Professional Game Board said more work needs to be done before Premiership rugby teams in England can start training.
Scott Barrett recommitted to New Zealand Rugby on Tuesday.