Rocky Balboa star Sylvester Stallone is currently filming what the Hollywood actor called 'a big surprise' on his social media account this week.
The 2016 Golden Globe winner was pictured alongside Mexico's finest Canelo Alvarez and his promoter Oscar De La Hoya for the new project.
"With the great champions Canelo Alvarez and Oscar De La Hoya on location shooting a big surprise! Keep punching..." - said the cryptic post by the veteran of over 80 acting credits.
Stallone recently wrapped on Guardians of the Galaxy Vol.2 - due out this year - and has already announced sequels for The Expendable (fourth installment) and The Escape Plan (second).