For those not in the know, Days of Future Past is a classic X-Men tale which saw Kitty Pryde return to the present from a srewed up future timeline where the Sentinels had killed off pretty much all of the X-Men.
It might seem an unlikely story for an X-Men First Class sequel however it has the potential to mix old and new X-casts in one movie. Just think about it, Kelsey Grammer's Beast meeting Nicholas Hoult's Beast, Ian McKellen and Michael Fassbender on screen together as Magneto, or even just a world weary Wolverine battling mutant killing robots in the future! Dear lord it sounds amazing. The time travelling element (as well as the death of numerous characters) would allow some of the original trilogy cast to return whilst many could be easily written out.
Now let's just suggest that this storyline does take place and it effectively allows for a new X-Men timeline to exist, what could follow on from this? Or failing that what past X-Men stories could follow on from X-Men: The Last Stand (2006) for yet more X-Movies?!?!
Hmmm... well how about these Top 5 Potential X-Men Movies?!