This will be Mukerji-Ranbir's third film together.
"AYAN MUKERJI's next for Dharma productions is slated to begin mid next year and release December 23rd, 2016. RANBIR KAPOOR and ALIA BHATT," filmmaker Karan Johar tweeted Tuesday.
In the past, Mukerji teamed up with Ranbir for hits "Yeh Jawaani Hai Deewani" and "Wake Up Sid" and both the films were produced by Karan under his banner Dharma Productions.
According to reports, the actor will be seen as a mythological superhero in the yet-to-be-titled film.