Harry Kewell says it was a "no-brainer" to join Ange Postecoglou at Celtic.

The Socceroos legend has joined his compatriot as an assistant at Parkhead.

Kewell told Celtic TV: "I was actually going for another interview for another job, and I thought it went really well, and I was looking forward to the call back.

"And in between that time, I got a call from the manager (Postecoglou), and the way he spoke to me, the way he presented the job, I said 'yes' straight away.

"I didn't even worry about the next part because I felt it was the opportunity for me to learn from... not only an Australian manager, but a great manager.

"He spoke very positively about how he's been monitoring me for a while, and I never knew that, so when he did speak to me about the ideas of what I can bring to the team, it was a no-brainer."