I can't believe you're still arguing this.
Yes there will be terms that absolve the obligation, but not 'this player is shitter than we thought, we are no longer buying him', that is what you get with an option to buy, not an obligation. You're not going to want to hear this from anyone because you seem really proud but I'm going to try and help you here; at this point you are not going to win this argument because you are wrong, like black and white wrong, no grey areas. You're completely wasting you're time.