The closest we've come to a solid update on Marvel Studios' X-Men reboot is a report from the trades revealing The Hunger Games: The Ballad of Songbirds & Snakes scribe Michael Lesslie is penning the screenplay.

Who knows how much has changed since then but, as far as we're aware, no director is attached and Lesslie may not even be the current writer on the project.

Despite that, the casting rumours continue coming in thick and fast. Yesterday, we shared a breakdown of the actors who are supposedly in the running for X-Men. And today, we have possible Mister Sinister casting!

According to insider @MyTimeToShineH, Marvel Studios is eyeing Dune, Pirates of the Caribbean: Dead Men Tell No Tales, and Skyfall star Javier Bardem to play the iconic X-Men villain in the MCU. You may recall that he was once said to be in line to play The Fantastic Four: First Steps' Galactus.