I don't think Mbappe wants to leave Paris Saint-Germain as a free agent so much that he will refuse to move to Real Madrid in this transfer window if the clubs agree. It's just that now is the most realistic chance for Mbappe to go to Real Madrid with an option that suits all three sides, that is, Paris Saint-Germain will receive a decent compensation. On the contrary, there is a very high probability that Mbappe deliberately leaked his letter to the press refusing to extend his contract with PSG in order to move to Real Madrid right now, and not wait for next year. And all his statements about his intention to work out the contract to the end may be an element of pressure on PSG to bring down the price.
Mbappe was smart enough. He wants to stay while PSG wants him to leave. Both parties are in disagreement with each other and have conflicting opinions. The only problem is how much money will be asked by PSG for mbappe to leave from the team? Will real madrid can afford to pay it?
I think that this becomes the main question right now. Let's say that if PSG value him at a hundred million pounds and Real Madrid refuses to take him, but another team is willing..
Will mbappe personally agree with its buyer?
It's caused by personal agreement between player and buyer has become main of requirements to complete the transaction. If mbappe will not make a personal agreement with its buyer and the transaction will never happen.
Think about that. This is a complicated case caused by both of parties are contradicting one to each other.