6 January 2014, 10:00
The 'Story Of My Life' singer is said to want the band to write more of their own songs in future.
One Direction star Harry Styles is said to be keen for the band to pursue a more "rock 'n' roll" direction with their next album.
The 'Best Song Ever' star is said to want the five-piece band to become "more credible" with their next release, following the launch of third album 'Midnight Memories' towards the end of 2013.
"Harry loves being in the band and respects and loves his bandmates," a source told the Daily Star this week. "But he's very ambitious and thinks they should be growing up more and becoming more credible.
"Their third album 'Midnight Memories' was already a lot less pop but Harry wants to push it further," the source continued. "He thinks their next album is the perfect time to create a much edgier and more rock 'n' roll image and he's already writing songs that he wants them to include on the record."
One Direction kick off their 'Where We Are' UK stadium tour this year.