The current state of the DCEU is probably best considered in flux after Justice League's performance. It's probably fair to say that Warner Bros are waiting to see what Aquaman does before they unveil more long-term plans for the expanded universe.
It's likely that we'll see some of the movies currently planned go ahead, but how many of them get to screen is up for debate right now. Even the film that was literally seeded at the end of Justice League - a bold, confident move considering how the film ended up being received - might not go ahead. And that's actually a shame, because a Legion Of Doom movie starring Jesse Eisenberg's Lex Luthor and Joe Manganiello's Deathstroke would be a lot of fun.
Well, the concept would be; the DCEU reality might not be, given their track record with "fun."
And Eisenberg would clearly be well up for that opportunity, as he's told Variety at SXSW that he's very keen to play the character again but has no idea what the future holds for his Lex. But at least he'd react positively if they asked...
I hope so. I mean, I have no idea is the truth. I love playing the character. Probably in terms of movie acting, it's the most enjoyable character I've had the opportunity to play. So I would love to do it again. But I don't know what their slate is. If you have any pull, please use it.
He also took the opportunity to confirm that he wasn't actually cut from Justice League, as was widely rumoured ahead of release. Rather, he says, his role actually expanded by the time the film was released from initial plans.
So maybe someone at Warner Bros does have some affection for his performance? That at least should offer some hope for seeing him again. Whether fans would react entirely positively is another matter.