4) Jewison Bennette (Costa Rica) – 18 Years And 158 Days
The forward actually plys his trade in England, having joined English Championship side Sunderland from Herediano only back in August. He has yet to start a league match but he did score his first goal for the Black Cats in a 2-2 draw against Watford back in September.
Bennette generally favours playing as a conventional winger, off the left flank, and he has already been capped seven times by his country. We shall see how often he features in the group stages.