Ange Postecoglou has asked for permission to quit Japanese club Yokohama F. Marinos and join Celtic, Football Insider has learned.

The Hoops have set their sights on prising the 55-year-old from Japan after losing out on Eddie Howe.

A Celtic source has told Football Insider the club have offered the job to Postecoglu and presented him with a contract.

He is now trying to secure his release from his Marinos contract six months after agreeing an extension to his deal.

Celtic have been talking to Postecoglou in the background while simultaneously negotiating with Eddie Howe.

The prospect of luring Howe from south of the border dramatically collapsed on Friday after two months of painstaking discussions.

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Celtic released a statement yesterday evening explaining that they would “very shortly” announce a new manager after Howe negotiations collapsed “for reasons outside both his and Celtic’s control”.

That paves the way for Postecoglu to join over the coming days, assuming he is granted permission to leave Marinos.

Celtic have now made their move for the experienced manager, whose 25-year managerial career has been spent mainly in Australia but also included spells in Greece and Japan.

He has won five league titles during his illustrious career, including four in Australia – two apiece at South Melbourne and Brisbane Roar – and one in Japan.

Postecoglu has also managed the Australia national side for five years, before quitting in 2018 to head to Japan.

In other news, Celtic plan to re-sign Fraser Forster mooted by well-connected pundit.