The former world No.1 was due to travel to Australia on one of the 18 charter flights laid on by tournament organisers but is still isolating at home.

The PA news agency understands that Murray, who is said to be in good health, is hoping to be able to arrive in Australia at a later date and participate in the year's first grand slam, which begins on February 8.

Murray and his team are working closely with tournament director Craig Tiley to try to come up with an acceptable solution.

Tournament organisers spent several months negotiating an arrangement that was acceptable to local and national government agencies regarding the admission of more than 1000 tennis players and associated personnel to Australia.

Players have begun arriving in Australia and they will complete a two-week period of quarantine, during which they are allowed out of their rooms to practice for five hours a day.

They were told that a positive test before flying would mean they were not allowed to travel to Australia.

A three-time grand slam champion, Murray has slipped in the rankings in recent years following hip surgery.

Murray has been given a wild card for the Australian Open.

He is hoping to make his first appearance in Melbourne since the emotional events of 2019, when he revealed the extent of his right hip problems and raised the possibility of imminent retirement.

Australian Associated Press