Keep in mind that there’s also already a pretty full slate of DC movies for the coming years, including fare like The Flash, Shazam!
2 and Black Adam, all of which are plausible places where Superman could appear as part of this new deal Cavill’s reportedly working out.
Assuming all this information is accurate, then despite Henry Cavill having expressed interest in tackling Man of Steel 2 and even suggested that Brainiac would make a good villain for the story, the pieces just aren’t in place over at DC and Warner Bros to move forward with it anytime soon.