"Culina is now the third coach to depart Sydney in less than two-and-a-half seasons, following inaugural title winning manager Pierre Littbarski and former England captain Terry Butcher out the door.
Sydney FC has won just two games in nine matches so far this season with a horrible home record of only one win and one draw from six matches at the Sydney Football Stadium.
Sydney's latest home defeat came at the hands of a 1-0 loss to Adelaide United on Saturday night.
Club chairman Andrew Kemeny says a new coach has not been selected yet .
"The only news is that we decided to part of the ways amicably and Branko will now stop working for Sydney FC," he said.
"That's all I can say at the moment. He agreed to part of the ways and that was his reaction."
what is the real reason of his being fired?