Bobo will be back to challenge his own A-League golden boot record after committing to Sydney FC for another campaign.

The Brazilian striker's retention has been largely a formality since he surpassed the 18-goal mark on his way to an all-time high season tally of 27 over 27 games, triggering a clause in his contract that guaranteed the same terms.

But it's understood the club slightly sweetened the deal to ensure the 33-year- old stuck around for a third season to help the all-conquering Sky Blues through the early stages of the post-Graham Arnold era.

Bobo has been close to making it official for some time and was looking forward to working under Steve Corica in 2018-19.

"Sydney FC is a great club and we have had two fantastic seasons, so to have earned another contract is an excellent outcome for me and my family," Bobo said. "Next season will be another huge challenge and I believe an exciting journey for the club."