The rumors on Manny Pacquiao and Justin Bieber joining the cast of the 'Expendables 4" are not stopping and will most likely be a confirmed reality in the months to come. Manny Pacquiao may be busy preparing for his fight with Floyd Mayweather this coming May 2, but with a rumored request from Sylvester Stallone to join the movie; Pacquiao will definitely find a way.

On the other hand, rumors of a bloody fight between Justin Bieber and Manny Pacquiao in the movie might actually be on the way. The boxing champion dropped by at the Kimmel show and was asked by the host about Justin Bieber's enthusiastic pose together with his boxing foe Floyd Mayweather.

"I noticed that Floyd keeps bringing Justin Bieber out in the ring, did you see that?" asked the ABC's late-night show host. "Will you beat Justin Bieber up, too?" Manny of course brushed of the question and gave a sheepishly smile to the host. Is this a hint that the two might actually end up fighting with each other in the movies?

Meanwhile, Justin Bieber is showing off a lot of his physique lately in magazines and shows. Is this an early marketing strategy for his inclusion in the movie? His tattoos are also becoming even manly than before and could actually live up to the expectations of the "Expendables" cast. It will definitely be a new and interesting venture for the singer to be part of the movie.

On the other hand, filming for the movie is scheduled this coming May 2015. The crew and cast of the movie will be filming once more on Bulgaria where legendary WWE champion Hulk Hogan is scheduled to join the cast. He will be the new villain in the movie, Mel Gibson's brother who's out seeking for revenge.

The "Expendables 4" is rumored to be released on cinemas on 2016.