<p>Lionel Messi is a mesmerising talent who has continued to astound the world of football ever since assuming his role at the heart of a star-studded Barcelona side in 2004. Overcoming a career-threatening growth hormone deficiency, he has won almost everything there is to win, including an unprecedented four FIFA Ballons d'Or.<br><br>Luca Caioli draws on numerous exclusive testimonies to tell Messi's story, including his parents and extended fa...