well, the guy said it himself so many times, playing for Real Madrid would be his dream come through, so it's now or never since his contract with PSG will expire next June and we all know that he did not renew so far. Moreover, PSG president has nothing to do with running a football club professionally. He thinks his money can buy anything and he actually mistreated his players on many occasions (Neymar, Rabiot, Verrati...).
It's all good for Real Madrid anyway...