The 46-year-old "Empire State of Mind" rapper said he can hook Styles, 21, up with the top artists and producers and ensure his solo career goes really well, reported Daily Star.
"Harry doesn't need any help with exposure, everybody in the world knows who he is. But he does need to make the transition from being part of a group to becoming an individual artist.
"I can get him working with the bigger artists, the biggest producers - and have him as the biggest artist in the world within a year."