The Italy international has decided to continue his career in Australia after reaching an agreement with the A-League side over a two-year contract
The 37-year-old was available on a free after Juventus opted not to renew his expiring contract this summer, and the former Italy international will now continue his career in Australia.
Sydney FC already announced on Friday that Del Piero had agreed to finalise a deal with the Sky Blues, with CEO Tony Pignata travelling to Italy this week to complete the move.
Liverpool made a late swoop for him on Tuesday, but their attempt has proven unfruitful as Del Piero has opted to join Sydney instead, and has inked a two-year deal with his new club.
A press conference has been scheduled at 13:30CET, where Del Piero is expected to confirm his decision to leave Europe for an adventure at Sydney FC.