At present, no reason has been given for Vaughn’s departure, although he will still remain involved with the project as producer. The move mirrors his involvement on Kick-Ass 2 , another sequel he declined to direct.
With the film pencilled in for a 2014 release date, Fox is expected to move fast to find a replacement for Vaughn, and according to Deadline (opens in new tab) , the man at the top of their list is none other than Bryan Singer.
Singer was of course the director of the first two X-Men films and also worked as a producer and writer on First Class , so his appointment would be the obvious choice. It was a big disappointment when he left the franchise in favour of Superman Returns , and we’d like to see him return to a universe he already knows inside out.
Expect further news on a replacement in the coming weeks, with filming set to commence early in the new year. X-Men: Days Of Future Past opens in the UK on 18 July 2014.