You're totally right, hence why I'm thinking that we've NOT yet agreed to anything, as the only way they can amend the contract is with written consent (or something to that effect) from Aberdeen. To get the process rolling, Rangers would've needed to write to us with their proposals to change the contract, which they've done.
I wouldn't be surprised to see Aberdeen hold off a bit longer.
On another note, has anyone worked out the financial pros and cons for either situation unfolding, with regard to us accepting/rejecting the proposal?