I am against collusion, but I wonder why the owners have to abid by this and players don't. I mean if for example, two high profile 3B are FA, and both has the same Agent. And one team in particular is interested in both (meaning they would want one of them, but would be happy with the other too), then the Agent can affectively make it so only one is reasonable to that team. Much like owners can coordinate to make sure that a FA can only get a certain amount for his contract.
To me, there is a similarity there, but no rules against the Players colluding, just the owners.
I do understand collusion of owners is in the baseball agreement, but still seems like it is not a fair two-way street.