When Joan Monfort took photos of Lionel Messi with a baby for a charity calendar almost 17 years ago, he knew the long-haired young man would make it big in soccer.

He could not have imagined the little boy would as well.

The baby in the photos — which have gone viral — was none other than Lamine Yamal, the Spanish wunderkind, who at 16 is showing such promise that he’s already being compared to the greats. The youngest to have played for Spain, he became the youngest player ever in the…