X-Men trilogy actor Shawn Ashmore has already stated that he thinks a X-Men 4 is impossible, however with the success of X-Men Origins: Wolverine, a renewed interest in the X-Men franchise has surfaced, particularly from X-Men / X2: X-Men United director Bryan Singer, who left X-Men: The Last Stand to direct Superman Returns but told Britain's Total Film Magazine that he regrets the decision:
It's weird for me to watch [X-Men: The Last Stand], because I'm so close to the universe. I'm eternally intertwined with X-Men now. What takes an audience four hours to watch -- the first two movies -- took six years of my life. So, to not be part of it ... It's a shame.
Singer went on to say that he may be interested in another prequel, namely X-Men Origins: Magneto:
Possibly. The only thing that concerns me about Magneto is that if the prequel were to follow the track I used in X-Men, which is Magneto's history in the concentration camp, then I've lived in that world. Apt Pupil, X-Men and now Valkyrie ... I've lived in that Nazi universe for quite a while. I just might need to take a little break
before I do something like that.
If Magneto is a little too much, there's always X-Men 4. Ashmore wouldn't complain. Neither would Wolverine producer Lauren Shuler Donner who has mentioned that she would love for Singer to return and direct almost any X-Men movie.