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The pair are planning a collaboration for Bieber's album.
Justin Bieber features on Chris Brown's new single 'Next To You' and Bieber is returning the favour with a duo track on his new album.
Usher's protégé is working on an edgier sound so as well as roping in Chris Brown, Justin's called on Britney Spears' producer Danjahands to help.
"What I'm creating for him I think is definitely a more mature sound," Danja said. "That's where he's headed now."
Justin & Chris' 'Next To You' is out on Monday 15th August.