The second-placed Australians take on the fourth-placed Omanis in what may prove to be a very vital fixture and Osieck feels New York Red Bulls ace Cahill may have a key influence on the green and gold‚Äôs chances.
"Accidentally as I was flicking through the television channels I watched Cahill play for Red Bulls against San Jose," Osieck said.
"He played in a deeper position behind the striker not up front.
"Tim is a very important player to me and when you look back he scored a crucial goal against Iraq and he is always a threat to any defence.
"I can assure you that he is very determined to deliver and help the team.
"You know, Arab teams do not like balls in the air and Tim's jumping ability and timing of his runs. He really attacks the defence.
"The high ball is not my game but sometimes you are in situations when from a corner or an early cross you need somebody on the end to threaten the opposition.‚ÄĚ