Reports from Turkey claim that 2017/18 A-League top scorer Bobo has agreed a move to Turkish Super Lig side Alanyaspor.
The Sydney FC hitman, who struck 27 goals in a record-breaking campaign last season, only renewed his contract as one of the club's marquee players a few weeks ago.
However, the 33 year-old Brazilian is reported to now favour a return to Turkey, where he has spent eight years of his career to date.
This includes a five year spell at Istanbul giants Besiktas between 2006 and 2011, where he played UEFA Champions League football and became the club's all-time record goalscorer.
Analyaspor finished 12th last season in the 20-team Super Lig, seven points above the drop zone.
Bobo's departure would be a major blow for Sydney - although his departure would give the club a little wriggle room to resolve the rumoured contractual rift with Johnny Warren Medallist Adrian Mierzejewski.
The Polish midfielder posted a cryptic tweet days ago suggesting he was unhappy with "broken promises."
Bobo and Serbian Milos Ninkovic currently fill the club's two allotted marquee slots, with Mierzejewski the A-League's highest-paid player under the salary cap.
Bobo's departure would open up the prospect of a promotion and pay rise for 31 year-old former Poland international.