Penalties are not allowed in contracts.
You can have a liquidated damages clause, but you have to show it wasn’t intended to penalize or deter a breach of contract.
So the issue with the GOR will be:
Were the damages to the ACC so difficult to calculate that it not only required a LD clause, but that it required specific performance, and that specific performance is a reasonable reflection of the probable harm to the ACC?
The issue the ACC has is we all know what the GOR was for. Look at every discussion on this board over the last year. Look at the very discussion in this thread. “Don’t settle, if you do, it will allow others to negotiate their exit.”
There isn’t a single person on this board that doesn’t think the GOR wasnt intended as a death penalty if teams wanted to leave, and therefore deterred them from staying. But that’s what makes it a violation of contract law and unenforceable. So that’s what the ACC has to get around.