Matthew said that he offered to play a younger version of him, but Efron turned it down.
They worked together on a movie.
A number of extracts from his memoir reveal an insight into the "Friends" star's life over the past few decades.
There are some surprising moments in the book. He recalled a time when he was taken back to a treatment center after filming an episode of "Friends."
The actor talked about his upcoming projects when he spoke to Jessica Shaw on the radio.
He realized he needed a younger actor to play the main role in his new film and he would have a smaller part.
He said that he was working on a script for some people. I want to make sure that happens. A small part of it is mine. I wrote it for myself, but realized I am too young to play it. We're trying to find the right people.
"Zac Efron was my ideal pick," he said. He said no, so we have to find someone who agrees. I will be directing a movie for the first time and I think I will be good at it. I hope I can do well.
The actor didn't say why Efron declined the offer, but he's been in high demand from studios since his "High School Musical" days, and he'll next be seen in A 24's "The Iron Claw."
In the film "17 Again," Zac Efron played the younger version of Mike O'Donnell, who reverted back to his 17-year-old self after a strange conversation. "17 Again" was a spiritual sequel, so it's logical that Efron would be in it.
The project is a romantic comedy, and that "Parks and Recreation" and "Ingrid Goes West" star Aubrey Plaza was close to signing on.
After calling off his engagement to Molly Hurwitz, the actor said he's done using dating apps.
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