Despite being one of the most straight up bonkers movie crossover ideas, the merging of the Men in Black and 21 Jump Street franchises was something that was seriously considered by Sony. 

The news of the crossover first came when it was mentioned in emails released during the Sony leaks that there were plans in place and that James Bobin who directed The Muppets and this year's Alice: Through the Looking Glass was attached to direct. 

However Jonah Hill, who claims to have had the idea to do the crossover originally, is now saying that he doesn't think the movie will ever happen.

"I had the idea," he said. "But I doubt that movie will get made."

Elaborating further, he said: "It's too complicated. They're trying to make all the deals, but it's kind of impossible with all the Men in Black stuff."

He also went on to explain where the idea came from originally: "The Jump Street films were so fun to make and the whole joke of them was they were making fun of remakes and sequels and reboots and now it's become a giant sequel/reboot. It's almost become what we were making fun of and it's hard to maintain that joke when it's so high stakes."

However James Bobin told Digital Spy earlier this year that there was already a script in place and he discussed the challenges in making such a film. 

"It's a question of where you choose go with it tonally. The challenge with this film is the tonal tightrope I'll be walking. But that is a fascinating challenge to me and I think you can be very funny within those parameters, for sure."

It's already been announced that Will Smith and Tommy Lee Jones wouldn't have any involvement in the proposed film and now with Hill expressing his own doubts about the project, it's hard to see Bobin getting the chance to putting this one together.