Regarding Lamine Yamal, I think Xavi and Barcelona have long-term plans for this palyer and they want to keep Lamine Yamal for a long time, after the performance we saw from Lamine Yamal in season for Barcelona they know a player at this age in a gem in the market. Since Lamine Yamal is not 18 years old yet, they can expect his offer for only three years but his agent and Barcelona agreed to extend his offer for longer until he is 18 years old until 2030.
https://www.forbes.com/sites/tomsanderson/2023/09/10/fc-barcelona-and-lamine-yamal-agree-seven-year-contract-extension-plan-reports/
That means if the deal is approved then Yamal will only be 23-24 years old. This means that it is the best time of football players. He grows better if in good handling. Xavi played an important role in Yamal. If he keeps giving more and more minutes, maybe he will become a great player at a young age. He will be easy to grow up in undergoing squeeze as a football player. It is also possible that he will become an expensive player in the future.https://www.forbes.com/sites/tomsanderson/2023/09/10/fc-barcelona-and-lamine-yamal-agree-seven-year-contract-extension-plan-reports/