After the post-release madness of Zack Snyder's Justice League, the future of the shared cinematic universe became less than stable. The film's post-credit scene seemingly began to set up the next film, or at the very least potential antagonists including Deathstroke. Joe Manganiello, who briefly portrayed Deathstroke, recently made reference to his experience in a very ambiguous way.
When talking to Comic Book Resources, Manganiello was asked about his role in Justice League, which (If you need a refresher) had an unmasked Deathstroke meeting up with Jesse Eisenberg's Lex Luthor to craft a diabolical team. The actor was asked about his small role to build a larger narrative which Manganiello coyly replied,
"Someday I'll write a book about it, but that time is… yeah."
He additionally declined to comment on his chances of returning to the role in future DCEU films as expected, which most likely doesn't bode well for fans hoping to see Manganiello play the world's deadliest assassin. After Justice League, there were discussions of a Deathstroke film moving forward, however, JL caused DC and Warner Bros. to shift their focus yet again. Though we are aware of films in the works like The Batman, Gotham City Sirens or Birds of Prey, CBR definitely seemed to believe that his reluctance was answer enough.
At the time of Justice League's release, the post-credit moment definitely implied that we could be witnessing an Injustice League or Legion of Doom to combat the newly formed team, but with no reason to believe we'll be seeing another JL team up — we can assume there's no point of a rival team either.
It's unfortunate that the reshoots and chaos of filming JL ended up resulting in the loss of a potential cinematic universe with endless possibilities. Sure, Justice League had plenty of bumps in the road, but I guess we'll never know the direction it was intended to go and will just have to wait to see what follows.
Maybe that long sought after Snyder cut could give fans a little more insight?