Bosnich begins a two-week trial with the reigning Hyundai A-League Premiers.
Bosnich will be put through his paces by the Marinersâ coaching staff and playing squad for one and a half hours at the Marinersâ idyllic bayside home and will be made available for comment at the conclusion of the session.
"Mark has not signed a contract with the Mariners, but has been invited to train with us to further his aspirations to return to top-flight football, if not with the Mariners, then with another club in Australia or abroad," said Mariners Executive Chairman Lyall Gorman.
"By virtue of Markâs vast and impressive professional experience, his very presence at training will be inspiration for our younger players ahead of the regular season and weâre delighted to offer one of the true trail blazers of Australian football the chance to experience the Mariners and the Hyundai A-League."