Not strictly an ECFC book, but as a father of two kids who have ploughed through more than their fair share of football books during lockdown, 'Broiter United' has been a notable success. Rather than the generic Roy of the Rovers/zero-to-hero plot which has been done to death, Broiter United is a series of rhymes about a team of cheats who humorously get stitched up as a result of their swindling. It's not on amazon, but has its own website, I recommend it.