The fifth installment of the box office hit "Transformers" is believed to hit the big screen by 2016, but some reports claim that it could possibly extend to the following year, Hallels reported. Rumors about Megan Fox's return have never stopped and recent reports suggest that the actress could be back for the franchise as she has reportedly made amends with director Michael Bay.

The proof of that would be her appearance in the successful "Teenage Mutant Ninja Turtles" movie which was produced by Bay.

For now, the cast is far from being finalized, but this doesn't stop fans from hoping that their favorite actors will appear in the film. Among those names that are hoped for a comeback are Shia LaBeouf and Megan Fox. As for Mark Wahlberg, the lead actor of 'Transformers 4,' a report claims that he already announced that he won't be returning for the sequel although this remains inconclusive, Christian Post reported.

Director Michael Bay is also rumored to have declined to direct the upcoming 'Transformers' movie to focus on another project. In retrospect, there were issues surrounding his work relationship with actress Megan Fox. Fox allegedly called him Adolf Hitler, and this was believed to be the reason why the actress failed to appear in the 3^rd and 4^th installments despite her undeniable popularity for the role. Although it was rumored that the two already made peace, paving way for Fox to return, Bay may no longer work for the 5^th 'Transformers' movie.

Some cast members expressed disappointment on the news regarding Bay's not directing the film. Stuntman Clay wishes that he will still be working with them because finding a very dynamic director who will be as good as he did in "Transformers: Age of Extinction" making the movie a box office hit.

On the other hand, screenwriter Ehren Kruger has been chosen by Paramount to create the storyline. Other than this, there is no information about the plot although fans and several reports already made conjectures about possible happenings in the film. 

As with other movies, the "Transformers" movies have their own share of criticism especially the latest. However, bad reviews cannot really be accounted for the lower domestic earning. Despite breaking a billion dollars internationally, the fourth franchise got the lowest as of $245 million so far. The first film grossed $319 million, the second topped $400 million, and the third managed $352 million, Latin Post reported.