Dwayne "The Rock" Johnson Joining The "Terminator" Franchise?

So basically, right now in Hollywood, if your movie franchise is going down the drain, then call The Rock to fix it and make it successful again. Dwayne "The Rock" Johnson is rumoured to be joining yet another dying franchise and reboot it and give it some new life.........that franchise, the "Terminator" franchise.
A new script for "Terminator 5" is rumoured to being wrote for Johnson to star as the killer Terminator who's been sent back to the 1950's to kill Sarah Connors parents. The interesting part about this is that even though big Arnie confirmed a few weeks back that he's returning to play the Terminator, he's actually reportedly playing a weapons guy who help the Connors and save them from The Rock's Terminator.
Personally I think this could be a fucking amazing fresh start to the long-running sci-fi franchise and this could turn it around and become popular once more. It's said that the Terminators used this guy, who Arnie's meant to be playing", likeness because he comes across as a big intimidating guy, which in a way would make sense really to why they picked his face.........he was intimidating when they first came face to face with him and thought, we like him, print his face.......SORTED!!!