Celtic have signed Australian midfielder Tom Rogic on a four-and-a-half year contract.

The 20-year-old will officially become a Celtic player if he is granted a work permit.

Rogic has scored five goals in 24 A-League appearances for Central Coast Mariners and impressed Celtic manager Neil Lennon in a trial spell during the Scottish champions' recent Spanish training camp.

The Australia international flew into Scotland on Wednesday with the rest of the Celtic squad after the Mariners accepted a bid believed to be around £400,000.

The player's future has been the leading A-League transfer story, with Premier League clubs Fulham, QPR and Reading having also taken an interest.

Rogic will join Rami Gershon in signing for Celtic this month, with the Israeli defender having arrived on loan from Standard Liege.