Two more Victorian clubs will join Collingwood and Geelong in the Western Australia hub, reports Seven News' Ryan Daniels.
Those two clubs will head west after Round 8 and play each other in "lockdown quarantine" in Round 9.
They will then proceed to face Fremantle and West Coast in Rounds 10 and 11.
Daniels reports that this will likely happen a third time in Rounds 12 and 13, meaning the WA clubs will play seven-straight games at Optus Stadium including the Derby.
Collingwood and Geelong will reportedly depart Perth after Round 9.