The pair came together to help Spain the Euros this summer.
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And at his presentation yesterday, the former RB Leipzig star said of Yamal: "Yes, of course I am (excited). He is a natural talent and a great person. I'm sure he will give us a lot of satisfaction this year.
"We have very ambitious players. We have to be calm because we have built a team for many years, with very young and talented players.
"It is a team to win titles."