Zac Efron and Robert De Niro are in talks to star together in road trip comedy 'Dirty Grandpa' that will be directed by Dan Mazer.
According to the Hollywood Reporter, Efron will play a young man who is tricked into driving his grandfather portrayed by De Niro to Florida for spring break.
De Niro will be play a perverted former Army general who thinks his grandson is about to marry the wrong woman.
The movie will be produced by Barry Josephson.
