Rumours suggest that the star could join his longtime friend Ben Affleck on the set of Zack Snyder's forthcoming superhero movie.
Matt Damon could board .Justice League', the feature on the DC Comics superhero team, along the same lines as Marvel's 'Avengers'.
The speculation should be regarded as such, however, especially since the character he is thought to play is not even guaranteed to appear in the movie.
Damon is thought to be in line to play Aquaman, king of the underwater city of Atlantis, whose superpowers include telepathy and superhuman strength.
If the rumours are true, Damon will co-star with Ben Affleck and Henry Cavill, who are expected to return to as Batman and Superman respectively.
The other persistent rumors surrounding 'Justice League' pertain to its possible release date. While Latino Review thinks the feature will be in theaters on 5 May 2017, the Wall Street Journal indicates that the feature will be released in 2018 at the earliest.