Noone outside of football knows Verratti. If Neymar is held to ransom there will be alot of negative publicity involved. Especially with the next world cup being staged there.
Insisting on a valid contract that Neymar willingly signed isn't holding someone ransom. And clubs must be able to insist on that without being pressured for not giving a childish brat what he wants every time he throws a hissy fit. Neymar is not some poor working class kid being played in a zero hour contract at McDonalds.