There’s also been talk in recent years of John Constantine returning to the big screen in a Justice League Dark movie, which Guillermo del Toro and Doug Liman were lined up to direct at different points.
Colin Farrell was once rumored to be up for the Constantine role, but lately it seems like that’s one of the lesser priority projects for the DC Extended Universe.
Nowadays if you want to see John Constantine in live action, you’d turn to Matt Ryan’s version, who led a short-lived NBC series and then popped up on Arrow before being thrown into Legends of Tomorrow a couple years later.