Downey Jr will do 'Iron Man 4' if Mel Gibson directs it
Downey Jr will do 'Iron Man 4' if Mel Gibson directs it

Robert Downey Jr is still not sure that he will once again play Tony Stark in 'Iron Man 4' but the actor says he would return to the Marvel franchise if old friend Mel Gibson directs it.

Robert Downey Jr unsure about fourth `Iron Man`

Robert Downey Jr is uncertain whether there will be a fourth part to the "Iron Man" series, despite the fact that "Iron Man 3" has reportedly minted 32 million pounds.