Peter Maes was in the gymnasium at Genk's training centre when Leon Bailey's extraordinary precocity struck him for the first time.
It was August 2015, and Bailey had just signed for Genk from Slovakian club Trencin. The Jamaican winger had recently turned 18, and Maes, who had been appointed head coach three months earlier, planned to ease him into the first-team picture.
But as Bailey told him during their first conversation in the gym inside the Jos Vaessen Talent Academy, Genk's high-specification youth training facility in northeast Belgium, the new boy was in a bit of a hurry.