Mbappe has never played in a Real Madrid jersey yet but you think Real Madrid is the best club for Mbappe. Real Madrid has been the best club for a long time and Real Madrid has not become the best club because of the signing of certain players but the players who get opportunities in their club are definitely lucky. Before Mbappe, many world-class stars have played in Real Madrid and they have developed their careers after they reached Real Madrid. Real Madrid build their squad every season in such a way that they have good quality players in every position of the team and they can perform consistently. Real Madrid has done well in the past seasons, Real Madrid will do well in the coming season and they will continue to do well.
In as much as Madrid is not becoming the best club because they signed one player, they are the best resulting from the collective efforts of these players put together so the signing of this player too has an effect by extension on the performance and ability of the team which cannot be undermined. In the era of other stars who played in Madrid at some point they were collectively the reason the team got to become the best and of world class standard which cannot be overlooked, so you cannot separate the fact that the team is best without its players, they aren't independent of themselves, collectively they make the dream team. Here's a new era for the likes of mbappe and other young Stars to keep the excellent image of the team till it gets pass their era.
If there is money, any club can complete a transfer agreement with any player. In this case, Real Madrid has a different strategy to contract with any club. Before making a deal, Real Madrid think about how injury-prone the player they are signing and how well they can expect to perform from that player. Again after getting a good performance from the player when they sell that player they can make a profit or they will lose financially. Real Madrid are a successful club today because of their thoughtful signings, be it in terms of performance or financial gain. This season they have signed Mbappe, of course they will get the performance they expect from Mbappe and when they sell Mbappe they can sell Mbappe to any club for a higher price than the purchase price.
They transferred Mbappe at a young and productive age. After getting maximum performance for 5 years, they can sell it to Saudi Arabia with a high transfer fee. Moreover, they transferred him for free. It is pointless to talk about these things for Mbappe because he has just arrived, but we can still say that this is the case. Real Madrid is a very well managed team in terms of player transfers. They use their reputation very well