Former Celtic and West Bromwich Albion midfielder Tom Rogic has retired from football at the age of 30 citing his wife's battle to bear children.
The couple had their first daughter in 2021 after "many failed rounds of IVF" and are expecting twins next year.
Rogic, capped 53 times for Australia, thanked Celtic owner Dermot Desmond and former chief executive Peter Lawwell for the successful treatment.
"Without their help, all of this would not have been possible," he said.
"Through Peter and Dermot, I was put in direct contact with one of the world's leading medical experts, which eventually led to my wife and I being placed at the clinic that would give us the best chance possible to start a family.