The talented Ifill is gradually working his way back to full fitness after sustaining a serious ankle injury against Newcastle Jets in December.
Ifill did make it back on to the field as a substitute in the playoff loss to Sydney FC, but it was obvious that he was off the pace.
"I wasn't miles away from full fitness but it was difficult," Ifill said.
"Sometimes that sort of thing works, sometimes it doesn't, but Ricki [Herbert] and myself felt it was worth the risk because it was going to be a long off season."
Ifill said his rehabilitation has been going to plan and he is confident he will be in good shape when the competition kicks off in October.
"I've been running and working hard in the gym, and in the last week have been doing some football related work," he added.
"I felt terrible after the first session but I am sure I will be well on the way when the rest of the squad come back in next month.
"I think the off season is far too long this year, and I hope it doesn't happen again, but the extra time could be good for me.
"The ankle is fine, but in the last month I had some soreness behind the knee. That is clearing up now and what I need is a really good pre-season."