As far the chances that Tom Cruise actually takes on the role of Hal Jordan in Green Lantern Corps., it might be too early to say.
Or a lesser-known actor for Hal Jordan over Tom Cruise, but this fan art definitely makes the case for the Mission: Impossible Fallout star to get the ring.
Green Lantern Corps. was scheduled for a 2020 release date, but with all the shuffling around in the DCEU that may be unlikely.
The man who reinvigorated Green Lantern in the comics, Geoff Johns, is working on the script for the film.