How to negotiate with a player who refuses to be transferred ?

Hello, I am french, so you will excuse me for my poor English, I use google translation ...
Everything is in the title, in fact, I am with the PSG and I want to buy Neymar, I pay the clause liberator, Barcelona agrees, but Neymar refuses to negotiate with me, is there a way? I'm playing with the new update of 1/08/17 available on this site ...
Thank you.

you must offer 222 million euro hahaaaaaaaaa


you can do this if your team got championships