Ronaldo, 40, is 23 years older than Yamal, 17, but Yamal's international résumé already stacks up well against one of the greatest strikers of all time. Here's an in-depth look at the two stars of the UEFA Nations League final:

UEFA Nations League final between Spain and Portugal approaches, Portuguese star Cristiano Ronaldo had some kind words for young Spanish star Lamine Yamal. However, he left a clear warning regarding his future.

Cristiano Ronaldo isn't ready to hang up his boots just yet - but the end is no longer out of sight. Speaking ahead of Portugal's UEFA Nations League final against Spain, the 40-year-old forward was asked the big question: is retirement near?