"It hasn't got a title at the moment but we wrote the song with Niall," he explained to BBC Newsbeat. "He's got some good ideas so had a lot of input."
He also went on to say that he hoped the song would appear on a future One Direction album, but didn't go into specifics.
"They are smart guys. They know what they're doing," he continued. "They play to arenas and stadiums around the world. So I think it's a bit of a challenge to come up with some songs to go with that."
He also talked briefly about the next McFly album which controversially will be "very pop but still very guitar driven".