Neymar had the chance to join Real Madrid in 2006 but decided against it, with his father claiming "no amount of money could buy my son's happiness".
The Brazil superstar joined Barcelona last summer in a deal that has brought lots of controversial publicity, but he has impressed on the pitch.
Neymar moving to Camp Nou was the culmination of a long drawn out transfer saga, in which Real Madrid were involved and the 22-year-old will reveal in a new autobiography that he could have joined them in 2006.
According to Marca, the book will explain that a young Neymar spent three weeks with the Santiago Bernabeu club and was offered the chance to move to Spain's capital, but eventually decided against it.
Neymar's father also speaks in the book and describes the decision as being one about happiness, claiming his son just was not happy enough to make the move from Brazil.
He eventually returned to his native club Santos and set about building a sparkling reputation that would lead to his high-profile move to Barcelona.