Journalist Paul Kimmage has left his role as ghost-writer for Brian O'Driscoll's autobiography.

Publishers Penguin confirmed the news, although no reason was given.

Penguin did confirm that Limerick Leader editor Alan English would replace Kimmage for the project.

In a Penguin statement, Brian O'Driscoll adressed the matter, saying: "I have enjoyed working with Paul over the last few years and it is unfortunate that we cannot complete this project together."