The 'Boyfriend' hitmaker is currently working with Wahlberg on the screenplay for the basketball film and the actor says no one will get on set until the script is just right, reported MTV online.
"The Bieber movie? I saw 115 pages. Just waiting - I want to send it to them once it's perfect. I sent Bieber's manager Scooter Braun a text. The last time I talked to him, I said, 'Hey, I need Justin to do me a favour,' he goes, 'Not without the script. So it's a process. Cutting those albums and doing those videos is easy, building a movie career is a difficult thing," Wahlberg said.
Bieber, 18, had previously said he was hoping to start on the film soon.
"Hopefully I'll be able to do that as well soon. So I'll be hooping, I got to get back in the gym, I haven't played basketball in a while," he had said.