Patrick Kisnorbo has replaced Erick Mombaerts as Melbourne City head coach.
Amid reports he is heading to Greece, Tony Popovic's Perth Glory departure was confirmed.
Sydney FC won a record fifth A-League title on Sunday, but Rhyan Grant accepts luck was perhaps on their side.
Melbourne City's maiden A-League Grand Final ended in defeat to Sydney FC, who have secured a place in the record books.
The 2019-20 A-League Grand Final will pit premiers Sydney FC against Melbourne City, who reached the championship game for the first time.
After five matches as interim boss, Grant Brebner was appointed Melbourne Victory head coach.
Alessandro Diamanti came up with a spectacular winner as Western United moved past Brisbane Roar into the last four.
A-League club Western Sydney Wanderers confirmed the departure of captain Mitchell Duke.
Jamie Maclaren ensured he finished the A-League regular season at the top of the scoring charts in Melbourne City's win over Western United.
Sydney FC got their hands on the Premiers' Plate but only after Western United had snatched a late victory.