Can the players' union veto a deal?

[Slateman]

I've been having a discussion with some friends. It started around CJ Wilson signing with LA for 77 million.

I maintain that if Wilson had really, really wanted to stay in Texas, he would have accepted a deal for like 50-60 million. The Rangers still would have had Darvish.

They are telling me that there is no way the players' union would have allowed a deal like that. They wouldn't have allowed Wilson to sign for that much less.

Is this true? Can the union just veto a deal like that? Or would it have been a case of them putting pressure on CJ but, ultimately, he could have done what he wanted?

[HalfSmokes]

Contracts have to be approved by MLB and the union, this came up when ARod was first traded to the Yankees after the union balked at letting him take a pay cut to go to Boston. That being said, I doubt they veto a new deal (rather than a restructuring)

[JCA-CrystalCity]

You would think they would have vetoed Andre Dawson signing with the Cubs if they had the power to block such deals.

[NatsDad14]

You would think they would have vetoed Andre Dawson signing with the Cubs if they had the power to block such deals.

I thought the owners colluded those years which is why the players were compensated for that.