Justice League: How could Superman come back?

Sure, Superman will be in Justice League. Now, it remains to know how and there are several theories in the matter! Here they are.
How could Superman come back? This is a question that everyone has been asking since it was clearly confirmed to the Justice League cast . Because yes, we still saw him die at the end of Batman vs Superman . In order to defeat Doomsday, the ugly monster created by Lex Luthor from the body of General Zod, the Kryptonian sacrificed himself by driving the Kryptonian blade through his body and that of Doomsday . An abyss instead of the heart, Superman looked dead and dead at the end of Batman vs Superman . And if, in reality, it was not and had passed in simple mode “hibernation” ? Yes, it sounds a little crazy, but not so much in the end since it is the arc adopted in comics. Basically, His body enters what can be called a kind of deep coma and only wakes up after he has had time to heal enough and to repair himself. As simple as hello! According to Cinemablend , scientists could thus seek to study the superhero with a fragment of his DNA and discover that he can not really die. And there, eureka! What if he was exposed to the sun to take his dose and regenerate? Here is a bright idea! Eureka! What if he was exposed to the sun to take his dose and regenerate? Here is a bright idea! Eureka! What if he was exposed to the sun to take his dose and regenerate? Here is a bright idea!
Otherwise, another way to get Superman back would be to use the journey in time . After all, is not that what Flash does, aka Ezra Miller , when it suddenly appears after a nightmare of Batman and warns him that “Lois Lane is the key” ? The superhero as fast as lightning could thus go back in time, just before the death of Superman, to save him. Or, more complex but why not, bring an earlier version of the Kryptonian superhero into the future. In the same genre, we also have multi-dimensional travel, which The Flash is also able to do. We would then have a completely different version of Superman, coming from a Earth-2, Earth-3 or even Krypton squarely, why not. But that, you are granted it, It’s a little far-fetched. Finally, with the new explosive trailer of Justice League , we have a new option to bring back Superman: the Mother Boxes . They have unlimited powers and, after all, they have transformed Victor into Cyborg. So why not use it to bring Superman back to life? And you what do you think ?