Blake, who is currently serving a two-year prison sentence in Leeds for armed robbery and firearm offences, was married to the Back to Black singer from 2007 to 2009.
Fielder-Civil did not attend Winehouse's funeral after prison officials did not allow him compassionate leave to attend the ceremony.
And now he is allegedly considering writing a book about the late star.
A source told British newspaper The Sun: 'Blake's been planning to write a tell-all on Amy since she became famous. When they were together he'd film her, but there are many hours of footage and photos he hasn't released.'
Amy, 27, was found dead at her London home last month.