But ahead of Spain's meeting with Portugal in Sunday's UEFA Nations League final (3 p.m. ET on FOX), all eyes are on Yamal and Messi's career rival Cristiano Ronaldo. Ronaldo, 40, is 23 years older than Yamal,

The final in Munich has been framed as a showdown between veteran Ronaldo, 40, one of the game's biggest names, and 17-year-old Yamal, the most exciting young talent in world football.  Ronaldo scored the winner to send Portugal past Germany into the final and Yamal was named man-of-the-match after bagging a brace in Spain's wild 5-4 semi-final win over France.

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.