Troisi joined the Wanderers after an extensive career both domestically and internationally in the Turkish Super Liga, Serie A and Saudi Pro League which has seen him play in 250 matches and score 49 goals.
The AFC Asian Cup, A-League and FFA Cup winner joins the club from Adelaide United where he has spent the last season.
Troisi has featured in every match so far for the Wanderers this season and scored his first goal for the club in the Sydney Derby.
